incisionvsincisiveWhich spelling fits?

Quick tell: incision is a noun, incisive is an adjective, so they fill different roles in a sentence.

Which to use

“incision” is a noun and “incisive” is an adjective - they look or sound alike but fill different roles in a sentence.

#23,566
“incision” frequency rank
#38,901
“incisive” frequency rank
62467
confusion score

Side-by-Side Comparison

Feature incision incisive
Definition A cut, especially one made by a scalpel or similar medical tool in the context of surgical operation; the scar resulting from such a cut. Intelligently analytical and concise. (of a person or mental process)

Where the eye mixes incision and incisive

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence. incision (VCCVCVVC) and incisive (VCCVCVCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.

8 ch
incision
8 ch
incisive

Why the eye confuses incision with incisive

These two trip readers on the page rather than in the ear: incision is /ɪnˈsɪʒən/ while incisive is /ɪnˈsaɪ.sɪv/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 62467, derived from the frequency rank of both members and their visual similarity.

incision is recorded at frequency rank #23,566, classified as anoun, pronounced /ɪnˈsɪʒən/. incisive is at rank #38,901, tagged as anadj, pronounced /ɪnˈsaɪ.sɪv/.

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 62467, this pair ranks #88,362 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of incision vs incisive

Shared letters: cins. Private to "incision": o. Private to "incisive": ev.

"incision" · 8 letters · shape VCCVCVVC  ·  "incisive" · 8 letters · shape VCCVCVCV

Known mistypes of this pair

  • incision ← icnision · inccision · inciison · incisino · incisionn · incisoin · incission · incition
  • incisive ← icnisive · inccisive · inciisve · incisiev · incisivve · incissive · incisvie · incsiive

Frequently Asked Questions

Is swapping "incision" for "incisive" ever safe?
No - they are not even the same part of speech. "incision" is a noun and "incisive" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "incision" or "incisive"?
"incision" is the more common of the two: it sits at frequency rank #23,566 in our English list, against #38,901 for "incisive". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "incision" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "incisive" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #88,362 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "incision" and "incisive" also get mixed up with nearby pairs, the highest-scored neighbour is "incisive vs indecisive". 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 #88,362 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