identicalvsidenticallyWhich spelling fits?

Quick tell: identical is a adjective, identically is an adverb, so they fill different roles in a sentence.

Which to use

“identical” is an adjective and “identically” is an adverb - they look or sound alike but fill different roles in a sentence.

#5,053
“identical” frequency rank
#38,896
“identically” frequency rank
43949
confusion score

Side-by-Side Comparison

Feature identical identically
Definition Bearing full likeness by having precisely the same set of characteristics; indistinguishable. In an identical manner.

Where the eye mixes identical and identically

Muted = shared; highlighted = the visual trap. They share 9 letters in sequence.

9 ch
identical
11 ch
identically

Visual trap between identical and identically

These two trip readers on the page rather than in the ear: identical is /ɪˈdɛntɪkl̩/ while identically is /aɪˈdɛntɪkəli/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “identical” sits inside “identically”, and the parts of speech differ too (adjective vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 43949, derived from the frequency rank of both members and their visual similarity.

identical is recorded at frequency rank #5,053, classified as anadj, pronounced /ɪˈdɛntɪkl̩/. identically is at rank #38,896, tagged as anadv, pronounced /aɪˈdɛntɪkəli/.

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 43949, this pair ranks #235,116 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of identical vs identically

Shared letters: acdeilnt. Private to "identical": -. Private to "identically": y.

"identical" · 9 letters · shape VCVCCVCVC  ·  "identically" · 11 letters · shape VCVCCVCVCCV

Known mistypes of this pair

  • identicaldientical · iddentical · idenitcal · idenntical · identcial · identiacl · identicall · identiccal
  • identicallydientically · iddentically · idenitcally · idenntically · identcially · identiaclly · identicallyy · identicaly

Frequently Asked Questions

Can "identical" and "identically" be used interchangeably?
No - they are not even the same part of speech. "identical" is an adjective and "identically" an adverb, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "identical" or "identically" show up more?
"identical" is the more common of the two: it sits at frequency rank #5,053 in our English list, against #38,896 for "identically". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "identical" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "identically" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #235,116 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • 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 #235,116 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