acuity
/əˈkjuːɪti/noun
acuity is spelled A-C-U-I-T-Y: 6 letters and 4 syllables. It appears about once in every 2 million words in written English, the 36,565th most frequent word form (wordfreq, 2021 data). As a noun, acuity means “Sharpness or acuteness, as of a needle, wit, etc” (English Wiktionary, September 2026). The plural of acuity is acuities.
How many letters and syllables are in acuity?
| Letters | 6: A-C-U-I-T-Y |
|---|---|
| Syllables | 4 (from its American pronunciation) |
| In writing | about once in every 2 million words; the 36,565th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is acuity?
Acuity appears about once in every 2 million words in written English, the 36,565th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce acuity?
- /əˈkjuːɪti/
Acuity has 4 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-acuity.wav, Wikimedia Commons (author and licence on each file's page).
Forms of acuity
- acuities plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does acuity mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Sharpness or acuteness, as of a needle, wit, etc.
- 2
The ability to think, see, or hear clearly.
The old woman with dementia lost her mental acuity.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Acuity in Spanish, French, German and Portuguese
In the sense sharpness or acuteness:
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does acuity come from?
From Middle English acuite, acuyte, from Middle French acuité, from Medieval Latin acuitas, irreg., from Latin acuō (“sharpen”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).