inhibitorvsinhibitoryWhich spelling fits?

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

Which to use

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

#17,643
“inhibitor” frequency rank
#30,845
“inhibitory” frequency rank
48488
confusion score

Side-by-Side Comparison

Feature inhibitor inhibitory
Definition One who, or that which, inhibits. That inhibits.

Letter map: inhibitor vs inhibitory

Shared letters muted; letters that set inhibitor and inhibitory apart highlighted. Shared run: 9. inhibitor runs 9 letters (VCCVCVCVC) against inhibitory's 10 (VCCVCVCVCV) - the length gap alone is often enough to separate them once you know to check it.

9 ch
inhibitor
10 ch
inhibitory

Role in the sentence - inhibitor and inhibitory

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: inhibitor is anoun and inhibitoryanadjective. On the page they differ by 1 extra letter(s) - “inhibitor” sits inside “inhibitory”. Our composite confusion score for this pair is 48488, derived from the frequency rank of both members and their visual similarity.

inhibitor is recorded at frequency rank #17,643, classified as anoun, pronounced /ɪnˈhɪbɪtɚ/. inhibitory is at rank #30,845, tagged as anadj.

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 48488, this pair ranks #192,631 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of inhibitor vs inhibitory

Shared letters: bhinort. Private to "inhibitor": -. Private to "inhibitory": y.

"inhibitor" · 9 letters · shape VCCVCVCVC  ·  "inhibitory" · 10 letters · shape VCCVCVCVCV

Known mistypes of this pair

  • inhibitor ← ihnibitor · inhbiitor · inhhibitor · inhibbitor · inhibiotr · inhibitorr · inhibitro · inhibittor
  • inhibitory ← ihnibitory · inhbiitory · inhhibitory · inhibbitory · inhibiotry · inhibitorry · inhibitoryy · inhibitoyr

Frequently Asked Questions

Do "inhibitor" and "inhibitory" mean the same thing in a sentence?
No - they are not even the same part of speech. "inhibitor" is a noun and "inhibitory" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "inhibitor" vs "inhibitory" - which ranks higher?
"inhibitor" is the more common of the two: it sits at frequency rank #17,643 in our English list, against #30,845 for "inhibitory". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Done with this confusable. These links stay specific to "inhibitor" and "inhibitory".

  • Full dictionary entry for "inhibitor" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "inhibitory" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #192,631 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "inhibitor" and "inhibitory" also get mixed up with nearby pairs, the highest-scored neighbour is "inhibit vs inhibitor". 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 #192,631 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