raréfier
French, verb\ʁa.ʁe.fje\
raréfier is spelled R-A-R-É-F-I-E-R (8 letters) and appears about once in every 7 million words in written French, the 87,470th most frequent French word form (wordfreq, 2021 data). Raréfier is a French verb meaning “to rarefy, make rarer” (English Wiktionary, September 2026). The French Wiktionary (Wiktionnaire) defines it as “Augmenter considérablement le volume d’un corps, sans augmenter sa matière propre ni son poids”.
What does raréfier mean in English?
verb
- 1
to rarefy, make rarer
- 2
become thinner on the ground, become less and further between, become scarce
Source: English Wiktionary, French section, dump of September 2, 2026 (CC BY-SA 4.0).
How French dictionaries define it
verb: 1. Augmenter considérablement le volume d’un corps, sans augmenter sa matière propre ni son poids. 2. Rendre moins fréquent. 3. Devenir 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 raréfier
- avoir + past participle infinitive multiword-construction
- raréfiant gerund participle present
- ayant + past participle gerund multiword-construction participle
- raréfié participle past
- raréfie first-person indicative present
- raréfies indicative present second-person
- raréfions first-person indicative plural
- raréfiez indicative plural present
- raréfient indicative plural present
- raréfiais first-person imperfect indicative
- raréfiait imperfect indicative singular
- raréfiions first-person imperfect indicative
- raréfiiez imperfect indicative plural
- raréfiaient imperfect indicative plural
- raréfiai first-person historic indicative
- raréfias historic indicative past
- raréfia historic indicative past
- raréfiâmes first-person historic indicative
Source: English Wiktionary and French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce raréfier?
- \ʁa.ʁe.fje\
Sources: English Wiktionary, French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
How common is raréfier in French?
raréfier appears about once in every 7 million words in written French.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).