tankvsthunkWhich spelling fits?

Quick tell: tank is a noun, thunk is a verb, so they fill different roles in a sentence.

Which to use

“tank” is a noun and “thunk” is a verb - they look or sound alike but fill different roles in a sentence.

#2,647
“tank” frequency rank
#47,382
“thunk” frequency rank
50029
confusion score

Side-by-Side Comparison

Feature tank thunk
Definition A closed container for liquids or gases. past participle of think

Where the eye mixes tank and thunk

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

4 ch
tank
5 ch
thunk

Look-alike desk: tank vs thunk

These two trip readers on the page rather than in the ear: tank is /ˈtæŋk/ while thunk is /θʌŋk/. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 50029, derived from the frequency rank of both members and their visual similarity.

tank is recorded at frequency rank #2,647, classified as anoun, pronounced /ˈtæŋk/. thunk is at rank #47,382, tagged as averb, pronounced /θʌŋk/.

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 50029, this pair ranks #178,044 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of tank vs thunk

Shared letters: knt. Private to "tank": a. Private to "thunk": hu.

"tank" · 4 letters · shape CVCC  ·  "thunk" · 5 letters · shape CCVCC

Known mistypes of this pair

  • tankatnk · takn · tankk · tannk · tnak · ttank
  • thunkhtunk · thhunk · thnuk · thukn · thunkk · thunnk · tthunk · tuhnk

Frequently Asked Questions

Do "tank" and "thunk" mean the same thing in a sentence?
No - they are not even the same part of speech. "tank" is a noun and "thunk" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "tank" vs "thunk" - which ranks higher?
"tank" is the more common of the two: it sits at frequency rank #2,647 in our English list, against #47,382 for "thunk". 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 "tank" and "thunk" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "tank" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "thunk" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #178,044 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "tank" and "thunk" also get mixed up with nearby pairs, the highest-scored neighbour is "Thun vs thunk". 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 #178,044 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