attenuate
/əˈtɛn.juˌeɪt/
"attenuate" is a 9-letter English headword indexed on PlainSpell.
The verdict
“attenuate” is an uncommon English word, ranked #62,688 in English word frequency and used as a verb.
- #62,688
- frequency rank, English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - To reduce in size, force, value, amount, or degree.
| Property | Value |
|---|---|
| Headword | attenuate |
| Language | English |
| Part of speech | Verb |
| IPA | /əˈtɛn.juˌeɪt/ |
| Letters | 9 |
| Frequency rank | #62,688 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “attenuate” sits in English frequency
Spelling & Dictionary Insight
The English entry for attenuate is 9 letters long, classified as a verb, and transcribed in the International Phonetic Alphabet as /əˈtɛn.juˌeɪt/. Corpus data places it at rank #62,688 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 8 distinct senses for this headword, so context determines which meaning a reader should apply.
No misspelling variants are generated for attenuate in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. This entry stands alone in our confusable dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: The verb if first attested in 1530, the adjective in 1626; borrowed from Latin attenuātus, the perfect passive participle of attenuō (see -ate (verb-forming suffix) and -ate (adjective-forming suffix)), from ad- (“to, towards, at”) + tenuo (“to make thin”),… The correct English form is attenuate, spelled A-T-T-E-N-U-A-T-E.
Definition
- 1To reduce in size, force, value, amount, or degree.
- 2To make thinner, as by physically reshaping, starving, or decaying.
- 3To become thin or fine; to grow less.
- 4To weaken.
- 5To rarefy.
- 6To reduce the virulence of a bacterium or virus.
- 7To reduce the amplitude of an electrical, radio, or optical signal.
- 8(of a beer) To become less dense as a result of the conversion of sugar to alcohol.
Etymology
The verb if first attested in 1530, the adjective in 1626; borrowed from Latin attenuātus, the perfect passive participle of attenuō (see -ate (verb-forming suffix) and -ate (adjective-forming suffix)), from ad- (“to, towards, at”) + tenuo (“to make thin”), itself from tenuis (“thin”) + -ō (verb-forming suffix).
Antonyms
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “attenuate”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is A-T-T-E-N-U-A-T-E - every other letter order is a misspelling in standard orthography.
- Say it as /əˈtɛn.juˌeɪt/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.