efficacious
adjective
Simple meaning
Marked by qualities giving the power to produce an intended effect.
Pronunciation
Say it like this:
ehfuhkayshuhsSay the bold part a little louder.
IPA pronunciation (US)
ɛfəˈkeɪʃəs
This word is pronounced essentially the same in American and British English, so one transcription covers both.
IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.
Definition
Everyday modern meanings first, grouped by part of speech.
adjective
formal
Effective; possessing efficacy.
Word at a Glance
- Difficulty
- C2 · Proficient
- Frequency
- Rare
- Typical Use
- Primarily written
Word Aura™
How this word commonly comes across.
Word Aura is being prepared for this meaning.
More ways to use efficacious
- “Written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley.”adjective
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Common Patterns and Combinations
How this word naturally appears with others.
Related Words
Connected to the same idea, not synonyms.
- efficacynoun
- effectivenessnoun
- placebonoun
More about this wordSynonyms, forms, origin
Synonyms
Sense: effective
Antonyms
Sense: effective
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