attenuate

/əˈtɛn.juˌeɪt/

//əˈtɛn.juˌeɪt// verb

By · According to Wiktionary data (CC BY-SA) ·

"attenuate" is a 9-letter English headword indexed on PlainSpell.

The verdict

“attenuate” is uncommon English (frequency #62,688 among 3,931 “A” headwords), classed as a verb. The kind of spelling people second-guess.

#62,688
frequency rank, English
3,931
“A” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To reduce in size, force, value, amount, or degree.

Corpus desk

Index EN-attenuate · attenuate · English

attenuate · rank #62,688 · 0 variants · 0 confusables

  • FREQ-RARE #62,688
  • LEN-LONG 9 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,931
  • PHOTO-FINISH athletically

Nearest frequency peer: athletically (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Long-tail ranks near “attenuate”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “attenuate” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for attenuate
PropertyValue
Headwordattenuate
LanguageEnglish
Part of speechVerb
IPA/əˈtɛn.juˌeɪt/
Letters9
Frequency rank#62,688
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “attenuate” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).attenuatefalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “athletically” (#62,687), “Ayub” (#62,690), “Ashmore” (#62,685). Among 3,931 “A” headwords, “attenuate” is #62,688. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

attenuate is uncommon English at frequency #62,688 among 3,931 “A” headwords, classed as averb, transcribed /əˈtɛn.juˌeɪt/. Rarity is why readers land here mid-draft. 8 senses are on record.

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

  1. 1
    To reduce in size, force, value, amount, or degree.
  2. 2
    To make thinner, as by physically reshaping, starving, or decaying.
  3. 3
    To become thin or fine; to grow less.
  4. 4
    To weaken.
  5. 5
    To rarefy.
  6. 6
    To reduce the virulence of a bacterium or virus.
  7. 7
    To reduce the amplitude of an electrical, radio, or optical signal.
  8. 8
    (of a beer) To become less dense as a result of the conversion of sugar to alcohol.

Recorded use

Wiktionary examples

These source excerpts show how attenuate appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. A manor-house clock from the far depths of shadow struck the hour, one, in a small, attenuated tone.
  2. Clumps of attenuated turkeys were suspended here and there.

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).

Synonyms

dilutediminishlessenmitigateweaken

Antonyms

amplifystrengthenintensify

This word in other languages

atenuar(Español)atténuer(Français)verringern(Deutsch)

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

How do you spell "attenuate"?
"attenuate" is spelled A-T-T-E-N-U-A-T-E. The IPA pronunciation is /əˈtɛn.juˌeɪt/.
What does "attenuate" mean?
As a verb, "attenuate" means: To reduce in size, force, value, amount, or degree.
How do you pronounce "attenuate"?
The IPA (International Phonetic Alphabet) transcription for "attenuate" is /əˈtɛn.juˌeɪt/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "attenuate"?
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 ma... See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "attenuate", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

baguettes#62,693applejack#62,677antiquary#62,676bemoaning#62,705

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list