efficace
French, adjective/e.fi.kas/
efficace is spelled E-F-F-I-C-A-C-E (8 letters) and appears 44 times per million words in written French, the 1,907th most frequent French word form (wordfreq, 2021 data). Efficace is a French adjective meaning “effective” (English Wiktionary, September 2026). The French Wiktionary (Wiktionnaire) defines it as “Qui produit son effet”.
What does efficace mean in English?
adjective
- 1
effective
- 2
efficacious
Source: English Wiktionary, French section, dump of September 2, 2026 (CC BY-SA 4.0).
How French dictionaries define it
adjective: 1. Qui produit son effet. 2. Qualifie la moyenne quadratique d'une mesure électrique d'un courant alternatif. 3. Qui a toujours son effet.
noun: 1. Efficacité, en parlant des choses religieuses. Note d’usage : Son emploi est devenu très rare.
The definition in the French Wiktionary (Wiktionnaire), in French.
Source: French Wiktionary (Wiktionnaire), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of efficace
- efficaces plural
Source: English Wiktionary and French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce efficace?
- /e.fi.kas/
- \e.fi.kas\
- \ɛ.fi.kas\
Sources: English Wiktionary, French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
English words that translate to efficace
Source: the translation tables of the English Wiktionary, dump of September 2, 2026.
How common is efficace in French?
efficace appears 44 times per million words in written French.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).