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# efficacious

«efficacious» in Mova's school dictionary: **Working well; producing the result you want, especially…** — its meaning for a pupil, its sense in the lessons and examples.

### part of speech

adjective (efficacious) — formal

### meaning for a pupil

(formal) Working well; producing the result you want, especially of a medicine or treatment. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/efficacious/#m1)

### sense in the lessons

A formal exam and medical word. It tells the reader that something truly works. In science: scientists test whether a treatment is efficacious with fair tests. Phrases: «efficacious in», «highly efficacious», «efficacious against».

### examples

- The new medicine proved efficacious against the cough. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/efficacious/#x1)
- Rest and fluids are efficacious for a cold. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/efficacious/#x2)
- The scientists tested whether the cream was efficacious. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/efficacious/#x3)
- A warm bath was efficacious in calming the baby. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/efficacious/#x4)
- The spray was efficacious against greenfly. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/efficacious/#x5)
- Practice is the most efficacious way to learn tables. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/efficacious/#x6)

### note

Formal. Noun: «efficacy». Close words: «effective» (works), «efficient» (works without waste). In speech say «works well», «effective». Pronounced ef-ih-KAY-shus.

### Trees and pragmatics

[Every meaning and example of «efficacious» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/efficacious/), each sentence with its dependency tree and frames.