instigatevsinstigatorConfusable pair

Quick tell: instigate is a verb, instigator is a noun, so they fill different roles in a sentence.

Which to use

“instigate” is a verb and “instigator” is a noun - they look or sound alike but fill different roles in a sentence.

#38,909
“instigate” frequency rank
#43,718
“instigator” frequency rank
82627
confusion score

Side-by-Side Comparison

Feature instigate instigator
Definition To bring about by urging or encouraging. A person who intentionally instigates, incites, or starts something, especially one that creates trouble.

Where the eye mixes instigate and instigator

Muted = shared; highlighted = the visual trap. They share 8 letters in sequence.

9 ch
instigate
10 ch
instigator

Visual trap between instigate and instigator

These two trip readers on the page rather than in the ear: instigate is /ˈɪnstəɡeɪt/ while instigator is /ˈɪnstɪɡeɪtə/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 82627, derived from the frequency rank of both members and their visual similarity.

instigate is recorded at frequency rank #38,909, classified as averb, pronounced /ˈɪnstəɡeɪt/. instigator is at rank #43,718, tagged as anoun, pronounced /ˈɪnstɪɡeɪtə/.

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 82627, this pair ranks #15,387 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of instigate vs instigator

Shared letters: aginst. Private to "instigate": e. Private to "instigator": or.

"instigate" · 9 letters · shape VCCCVCVCV  ·  "instigator" · 10 letters · shape VCCCVCVCVC

Known mistypes of this pair

  • instigateinnstigate · insitgate · insstigate · instgiate · instiagte · instigaet · instigatte · instiggate
  • instigatorinnstigator · insitgator · insstigator · instgiator · instiagtor · instigaotr · instigatorr · instigatro

Frequently Asked Questions

Is swapping "instigate" for "instigator" ever safe?
No - they are not even the same part of speech. "instigate" is a verb and "instigator" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "instigate" vs "instigator" - which ranks higher?
"instigate" is the more common of the two: it sits at frequency rank #38,909 in our English list, against #43,718 for "instigator". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "instigate" and "instigator" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "instigate" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "instigator" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #15,387 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "instigate" and "instigator" also get mixed up with nearby pairs, the highest-scored neighbour is "instigation vs instigator". 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 #15,387 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