teethingvstestingWhich spelling fits?

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

Which to use

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

#35,555
“teething” frequency rank
#2,184
“testing” frequency rank
37739
confusion score

Side-by-Side Comparison

Feature teething testing
Definition The eruption, through the gums, of the milk teeth; dentition. Difficult; tough.

Where the eye mixes teething and testing

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.

8 ch
teething
7 ch
testing

Look-alike desk: teething vs testing

These two trip readers on the page rather than in the ear: teething is /ˈtiːðɪŋ/ while testing is /ˈtɛs.tɪŋ/. 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 (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 37739, derived from the frequency rank of both members and their visual similarity.

teething is recorded at frequency rank #35,555, classified as anoun, pronounced /ˈtiːðɪŋ/. testing is at rank #2,184, tagged as anadj, pronounced /ˈtɛs.tɪŋ/.

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 37739, this pair ranks #291,936 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of teething vs testing

Shared letters: egint. Private to "teething": h. Private to "testing": s.

"teething" · 8 letters · shape CVVCCVCC  ·  "testing" · 7 letters · shape CVCCVCC

Known mistypes of this pair

  • teethingetething · teehting · teethhing · teethign · teethingg · teethinng · teethnig · teetihng
  • testingetsting · tesitng · tessting · testign · testingg · testinng · testnig · testting

Frequently Asked Questions

Do "teething" and "testing" mean the same thing in a sentence?
No - they are not even the same part of speech. "teething" is a noun and "testing" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "teething" or "testing" show up more?
"testing" is the more common of the two: it sits at frequency rank #2,184 in our English list, against #35,555 for "teething". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

After this comparison

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

  • Full dictionary entry for "teething" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "testing" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #291,936 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "teething" and "testing" also get mixed up with nearby pairs, the highest-scored neighbour is "teetering vs teething". 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 #291,936 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