adaptvsadaptedConfusable pair

Which to use

“adapt” and “adapted” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#7,309
“adapt” frequency rank
#5,383
“adapted” frequency rank
12692
confusion score

Side-by-Side Comparison

Feature adapt adapted
Definition To make suitable; to make to correspond; to fit or suit. simple past and past participle of adapt

Where the eye mixes adapt and adapted

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

5 ch
adapt
7 ch
adapted

Why the eye confuses adapt with adapted

A purely visual mix-up. adapt (/əˈdæpt/) and adapted (/əˈdæptɪd/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 2 extra letter(s) - “adapt” sits inside “adapted”. Our composite confusion score for this pair is 12692, derived from the frequency rank of both members and their visual similarity.

adapt is recorded at frequency rank #7,309, classified as averb, pronounced /əˈdæpt/. adapted is at rank #5,383, tagged as averb, pronounced /əˈdæptɪd/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 12692, this pair ranks #480,086 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of adapt vs adapted

Shared letters: adpt. Private to "adapt": -. Private to "adapted": e.

"adapt" · 5 letters · shape VCVCC  ·  "adapted" · 7 letters · shape VCVCCVC

Known mistypes of this pair

  • adaptaadpt · adappt · adaptt · adatp · addapt · adpat · daapt
  • adaptedaadpted · adapetd · adappted · adaptde · adaptedd · adaptted · adatped · addapted

Frequently Asked Questions

Is swapping "adapt" for "adapted" ever safe?
No. They are said differently (/əˈdæpt/ versus /əˈdæptɪd/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "adapt" or "adapted" show up more?
"adapted" is the more common of the two: it sits at frequency rank #5,383 in our English list, against #7,309 for "adapt". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "adapt" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "adapted" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #480,086 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "adapt" and "adapted" also get mixed up with nearby pairs, the highest-scored neighbour is "adapt vs appt". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #480,086 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list