Which to use
“temper” and “tester” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #9,551
- “temper” frequency rank
- #21,383
- “tester” frequency rank
- 30934
- confusion score
Side-by-Side Comparison
| Feature | temper | tester |
|---|---|---|
| Definition | A general tendency or orientation towards a certain type of mood, a volatile state; a habitual way of thinking, behaving or reacting. | A canopy over a bed. |
Where the eye mixes temper and tester
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Visual trap between temper and tester
A purely visual mix-up. temper (/ˈtɛmpə/) and tester (/ˈtɛstə/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 30934, derived from the frequency rank of both members and their visual similarity.
temper is recorded at frequency rank #9,551, classified as anoun, pronounced /ˈtɛmpə/. tester is at rank #21,383, tagged as anoun, pronounced /ˈtɛstə/.
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 30934, this pair ranks #350,408 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of temper vs tester
Shared letters: ert. Private to "temper": mp. Private to "tester": s.
"temper" · 6 letters · shape CVCCVC · "tester" · 6 letters · shape CVCCVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "temper" for "tester" ever safe?
Frequency check: "temper" vs "tester" - which ranks higher?
Useful next steps
Eye-level mix-up between "temper" and "tester" is sorted above. Next: full entries or other pairs that share a letter shape.
- Full dictionary entry for "temper" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "tester" - compare definitions side by side with the headword page. Word entry
- This pair ranks #350,408 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "temper" and "tester" also get mixed up with nearby pairs, the highest-scored neighbour is "tater vs tester". 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 #350,408 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.