tellervstesterTell them apart

Which to use

“teller” and “tester” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#15,292
“teller” frequency rank
#21,383
“tester” frequency rank
36675
confusion score

Side-by-Side Comparison

Feature teller tester
Definition A person who tells stories. A canopy over a bed.

Where the eye mixes teller and tester

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
teller
6 ch
tester

Why the eye confuses teller with tester

A purely visual mix-up. teller (/ˈtɛlə/) 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 36675, derived from the frequency rank of both members and their visual similarity.

teller is recorded at frequency rank #15,292, classified as anoun, pronounced /ˈtɛlə/. 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 36675, this pair ranks #301,140 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of teller vs tester

Shared letters: ert. Private to "teller": l. Private to "tester": s.

"teller" · 6 letters · shape CVCCVC  ·  "tester" · 6 letters · shape CVCCVC

Known mistypes of this pair

  • telleretller · telelr · teler · tellerr · tellre · tleler · tteller
  • testeretster · tesetr · tesster · testerr · testre · testter · tetser · tseter

Frequently Asked Questions

Is swapping "teller" for "tester" ever safe?
No. They are said differently (/ˈtɛlə/ versus /ˈtɛstə/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "teller" or "tester"?
"teller" is the more common of the two: it sits at frequency rank #15,292 in our English list, against #21,383 for "tester". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "teller" 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 #301,140 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "teller" 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 #301,140 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