---
title: reactive — school dictionary · trees and pragmatics
description: «reactive» in the school dictionary: Likely to change quickly when it meets another substance; a reactive metal like sodium reacts strongly with water. Every meaning for a pupil with its dependency tree and pragmatics.
---

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# reactive

<!-- .vintro -->
**Who acts:** Likely, it, reactive metal, something, reactive dog, Sodium · **What happens:** change, meet, react, act, happen, respond · **To what, where:** substance, flame, sun.

<!-- .vabout -->
«reactive» in the school dictionary: its 3 meanings for a pupil and its 6 examples, every sentence parsed by Mova itself — its syntax tree, a dependency tree in the style of Universal Dependencies, and its pragmatics clause by clause. The word in the dictionary, with its sense in the lessons: [reactive in the school dictionary](https://md.mova.elamur.ai/free/en/dictionaries/school/w/reactive.md).

## Meaning 1 {#m1}

<!-- .note -->
Usage: science — kept apart, not parsed.

<!-- .ven lang=en -->
Likely to change quickly when it meets another substance; a reactive metal like sodium reacts strongly with water.

<!-- fold The tree, 18 words -->
```conllu
# sent_id = dict:school:reactive:m1:1
# text = Likely to change quickly when it meets another substance; a reactive metal like sodium reacts strongly with water.
1	Likely	likely	ADJ	JJ	Degree=Pos	3	nsubj	_	_
2	to	to	PART	TO	_	3	mark	_	_
3	change	change	VERB	VB	VerbForm=Inf	0	root	_	_
4	quickly	quickly	ADV	RB	_	3	advmod	_	_
5	when	when	SCONJ	WRB	_	7	mark	_	_
6	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	7	nsubj	_	_
7	meets	meet	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	advcl	_	_
8	another	another	DET	DT	PronType=Ind	9	det	_	_
9	substance	substance	NOUN	NN	Number=Sing	7	obj	_	SpaceAfter=No
10	;	;	PUNCT	:	_	16	punct	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	13	det	_	_
12	reactive	reactive	ADJ	JJ	Degree=Pos	13	amod	_	_
13	metal	metal	NOUN	NN	Number=Sing	16	nsubj	_	_
14	like	like	ADP	IN	_	15	case	_	_
15	sodium	sodium	NOUN	NN	Number=Sing	13	nmod	_	_
16	reacts	react	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	parataxis	_	_
17	strongly	strongly	ADV	RB	_	16	advmod	_	_
18	with	with	ADP	IN	_	19	case	_	_
19	water	water	NOUN	NN	Number=Sing	16	obl	_	SpaceAfter=No
20	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **change** | to-infinitive | Likely |  |  |  |  | quickly *property* | vn dress-41.1.1-1-1 «NP V»: agent=Agent |
| 2 | **meet** | present | it | another substance |  |  |  |  | vn meet-36.3-1 «NP V NP»: agent=Agent substance=Co-Agent |
| 3 | **react** | present | a reactive metal like sodium |  |  |  |  | with water; strongly *property* | vn respond-113 «NP V PP.predicate»: agent=Agent with water=Eventuality |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## Meaning 2 {#m2}

<!-- .ven lang=en -->
Acting only after something has happened, instead of planning ahead (the opposite of "proactive").

<!-- fold The tree, 14 words -->
```conllu
# sent_id = dict:school:reactive:m2:1
# text = Acting only after something has happened, instead of planning ahead (the opposite of "proactive").
1	Acting	act	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
2	only	only	ADV	RB	_	6	advmod	_	_
3	after	after	SCONJ	IN	_	6	mark	_	_
4	something	something	PRON	NN	Number=Sing|PronType=Ind	6	nsubj	_	_
5	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	aux	_	_
6	happened	happen	VERB	VBN	Tense=Past|VerbForm=Part	1	advcl	_	SpaceAfter=No
7	,	,	PUNCT	,	_	10	punct	_	_
8	instead	instead	ADV	RB	ExtPos=ADP	10	case	_	_
9	of	of	ADP	IN	_	8	fixed	_	_
10	planning	planning	NOUN	NN	Number=Sing	1	obl	_	_
11	ahead	ahead	ADV	RB	_	10	advmod	_	_
12	(	(	PUNCT	-LRB-	_	14	punct	_	SpaceAfter=No
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	_	_
14	opposite	opposite	NOUN	NN	Number=Sing	10	appos	_	_
15	of	of	SCONJ	IN	_	17	mark	_	_
16	"	"	PUNCT	``	_	17	punct	_	SpaceAfter=No
17	proactive	proactive	ADJ	JJ	Degree=Pos	14	acl	_	SpaceAfter=No
18	"	"	PUNCT	''	_	17	punct	_	SpaceAfter=No
19	)	)	PUNCT	-RRB-	_	14	punct	_	SpaceAfter=No
20	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **act** | gerund |  |  |  |  |  | instead planning | vn act-114-1-1 «NP V»: agent=Agent |
| 2 | **happen** | present · perfect | something |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |

## Meaning 3 {#m3}

<!-- .ven lang=en -->
Easily upset or quick to respond strongly to things, like a reactive dog that barks at everything.

<!-- fold The tree, 17 words -->
```conllu
# sent_id = dict:school:reactive:m3:1
# text = Easily upset or quick to respond strongly to things, like a reactive dog that barks at everything.
1	Easily	easily	ADV	RB	_	2	advmod	_	_
2	upset	upset	ADJ	JJ	Degree=Pos	0	root	_	_
3	or	or	CCONJ	CC	_	4	cc	_	_
4	quick	quick	ADJ	JJ	Degree=Pos	2	conj	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	respond	respond	VERB	VB	VerbForm=Inf	4	xcomp	_	_
7	strongly	strongly	ADV	RB	_	6	advmod	_	_
8	to	to	ADP	IN	_	9	case	_	_
9	things	thing	NOUN	NNS	Number=Plur	6	obl	_	SpaceAfter=No
10	,	,	PUNCT	,	_	14	punct	_	_
11	like	like	ADP	IN	_	14	case	_	_
12	a	a	DET	DT	Definite=Ind|PronType=Art	14	det	_	_
13	reactive	reactive	ADJ	JJ	Degree=Pos	14	amod	_	_
14	dog	dog	NOUN	NN	Number=Sing	9	appos	_	_
15	that	that	PRON	WDT	PronType=Rel	16	nsubj	_	_
16	barks	bark	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	14	acl:relcl	_	_
17	at	at	ADP	IN	_	18	case	_	_
18	everything	everything	PRON	NN	Number=Sing|PronType=Tot	16	obl	_	SpaceAfter=No
19	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **respond** *speech: other* | to-infinitive |  |  |  |  |  | to things; strongly *property* | vn respond-113 «NP V PP.theme»: agent=Agent to thing=Theme |
| 2 | **bark** | present | a reactive dog |  |  |  |  | at everything | vn animal\_sounds-38 «NP V PP.stimulus»: agent=Agent at everything=Stimulus |

## Example 1 {#x1}

<!-- .ven lang=en -->
Sodium is so reactive that it fizzes and bursts into flame in water.

```conllu
# sent_id = dict:school:reactive:x1:1
# text = Sodium is so reactive that it fizzes and bursts into flame in water.
1	Sodium	sodium	NOUN	NN	Number=Sing	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	so	so	ADV	RB	_	4	advmod	_	_
4	reactive	reactive	ADJ	JJ	Degree=Pos	0	root	_	_
5	that	that	SCONJ	IN	_	7	mark	_	_
6	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	7	nsubj	_	_
7	fizzes	fizz	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	advcl	_	_
8	and	and	CCONJ	CC	_	9	cc	_	_
9	bursts	burst	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	conj	_	_
10	into	into	ADP	IN	_	11	case	_	_
11	flame	flame	NOUN	NN	Number=Sing	9	obl	_	_
12	in	in	ADP	IN	_	13	case	_	_
13	water	water	NOUN	NN	Number=Sing	9	obl	_	SpaceAfter=No
14	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Sodium |  |  |  |  | reactive *property* | tree rules |
| 2 | **fizz** | present | Sodium |  |  |  |  |  | vn entity\_specific\_modes\_being-47.2 «NP V»: agent=Theme |
| 3 | **burst** | present | Sodium *not said here* |  |  | flame |  | in water | vn appear-48.1.1 «NP V PP.location»: agent=Theme in water=Location |

## Example 2 {#x2}

<!-- .ven lang=en -->
Gold is not very reactive, so it does not rust.

```conllu
# sent_id = dict:school:reactive:x2:1
# text = Gold is not very reactive, so it does not rust.
1	Gold	gold	NOUN	NN	Number=Sing	5	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	not	not	PART	RB	Polarity=Neg	5	advmod	_	_
4	very	very	ADV	RB	_	5	advmod	_	_
5	reactive	reactive	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
6	,	,	PUNCT	,	_	11	punct	_	_
7	so	so	ADV	RB	_	11	advmod	_	_
8	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	11	nsubj	_	_
9	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	aux	_	_
10	not	not	PART	RB	Polarity=Neg	11	advmod	_	_
11	rust	rust	VERB	VB	VerbForm=Inf	5	conj	_	SpaceAfter=No
12	.	.	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **is** | present | Gold |  |  |  |  | reactive *property* | tree rules |
| 2 | **not** **rust** | present · do-support | Gold |  |  |  |  |  | vn entity\_specific\_cos-45.5 «NP.patient V»: agent=Patient |

## Example 3 {#x3}

<!-- .ven lang=en -->
Our dog is reactive and barks at every bike.

```conllu
# sent_id = dict:school:reactive:x3:1
# text = Our dog is reactive and barks at every bike.
1	Our	our	PRON	PRP$	Case=Gen|Number=Plur|Person=1|Poss=Yes|PronType=Prs	2	nmod:poss	_	_
2	dog	dog	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	reactive	reactive	ADJ	JJ	Degree=Pos	0	root	_	_
5	and	and	CCONJ	CC	_	6	cc	_	_
6	barks	bark	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
7	at	at	ADP	IN	_	9	case	_	_
8	every	every	DET	DT	PronType=Tot	9	det	_	_
9	bike	bike	NOUN	NN	Number=Sing	6	obl	_	SpaceAfter=No
10	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Our dog |  |  |  |  | reactive *property* | tree rules |
| 2 | **bark** | present | Our dog *not said here* |  |  |  |  | at every bike | vn animal\_sounds-38 «NP V PP.stimulus»: agent=Agent at bike=Stimulus |

## Example 4 {#x4}

<!-- .ven lang=en -->
Don't just be reactive — plan ahead before problems happen.

```conllu
# sent_id = dict:school:reactive:x4:1
# text = Don't just be reactive — plan ahead before problems happen.
1	Do	do	VERB	VB	VerbForm=Inf	0	root	_	SpaceAfter=No
2	n't	not	PART	RB	Polarity=Neg	5	advmod	_	_
3	just	just	ADV	RB	_	5	advmod	_	_
4	be	be	AUX	VB	VerbForm=Inf	5	cop	_	_
5	reactive	reactive	ADJ	JJ	Degree=Pos	1	csubj	_	_
6	—	-	PUNCT	:	_	7	punct	_	_
7	plan	plan	NOUN	NN	Number=Sing	5	conj	_	_
8	ahead	ahead	ADV	RB	_	7	advmod	_	_
9	before	before	SCONJ	IN	_	11	mark	_	_
10	problems	problem	NOUN	NNS	Number=Plur	11	nsubj	_	_
11	happen	happen	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	advcl	_	SpaceAfter=No
12	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | imperative | you *not said here* |  |  |  |  |  | vn act-114-1 «NP V»: agent=Agent |
| 2 | **not** **is** | infinitive |  |  |  |  |  | reactive *property* | tree rules |
| 3 | **happen** | present | problems |  |  |  |  |  | vn occur-48.3-1 «NP V»: agent=Theme |

## Example 5 {#x5}

<!-- .ven lang=en -->
Some sunglasses are reactive to light and darken in the sun.

```conllu
# sent_id = dict:school:reactive:x5:1
# text = Some sunglasses are reactive to light and darken in the sun.
1	Some	some	DET	DT	PronType=Ind	2	det	_	_
2	sunglasses	sunglasses	NOUN	NNS	Number=Plur	4	nsubj	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	reactive	reactive	ADJ	JJ	Degree=Pos	0	root	_	_
5	to	to	ADP	IN	_	6	case	_	_
6	light	light	NOUN	NN	Number=Sing	4	obl	_	_
7	and	and	CCONJ	CC	_	8	cc	_	_
8	darken	darken	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
9	in	in	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	sun.	sun.	NOUN	NN	Number=Sing	8	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | some sunglasses |  |  |  |  | to light; reactive *property* | tree rules |
| 2 | **darken** | present | some sunglasses *not said here* |  |  | the sun. |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

## Example 6 {#x6}

<!-- .ven lang=en -->
Potassium is more reactive than iron.

```conllu
# sent_id = dict:school:reactive:x6:1
# text = Potassium is more reactive than iron.
1	Potassium	potassium	NOUN	NN	Number=Sing	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	more	more	ADV	RBR	Degree=Cmp	4	advmod	_	_
4	reactive	reactive	ADJ	JJ	Degree=Pos	0	root	_	_
5	than	than	ADP	IN	_	6	case	_	_
6	iron	iron	NOUN	NN	Number=Sing	4	obl	_	SpaceAfter=No
7	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Potassium |  |  |  |  | than iron; reactive *property* | tree rules |

<!-- div src -->

**Text:** the school dictionary of Mova's schools (`world/data/dictionary-schools/`), written for Mova. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each meaning and example read on its own. Elamur Cosmic License.

<!-- /div -->

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