Which to use
“stimuli” and “stimulus” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #17,504
- “stimuli” frequency rank
- #9,399
- “stimulus” frequency rank
- 26903
- confusion score
Side-by-Side Comparison
| Feature | stimuli | stimulus |
|---|---|---|
| Definition | plural of stimulus | An external phenomenon that has an influence on a system, by triggering or modifying an internal phenomenon; for example, a spur or incentive that drives a person to take action or change behaviour. |
Where the spellings diverge
Shared letters are muted; the letters that actually set stimuli and stimulus apart are highlighted. They share 6 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
stimuli and stimulus form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 26903, derived from the frequency rank of both members and their visual similarity.
stimuli is recorded at frequency rank #17,504, classified as anoun, pronounced /ˈstɪm.jʊˌlaɪ̯/. stimulus is at rank #9,399, tagged as anoun, pronounced /ˈstɪm.jə.ləs/.
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 26903, this pair ranks #383,166 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "stimuli" and "stimulus" be used interchangeably?
Remembering stimuli vs stimulus
The fastest way to pick the right one every time.
- Read both glosses above and match the meaning you intend, only context separates this pair.
- See each word in full, definition, IPA, etymology and its other confusables. Full “stimuli” entry
- Browse more pairs most likely to be confused. Most confusable