suevssureWhat's the difference?

Quick tell: sue is a verb, sure is an adjective, so they fill different roles in a sentence.

Which to use

“sue” is a verb and “sure” is an adjective - they look or sound alike but fill different roles in a sentence.

#4,985
“sue” frequency rank
#202
“sure” frequency rank
5187
confusion score

Side-by-Side Comparison

Feature sue sure
Definition To file a legal action against someone, generally a non-criminal (civil) action. Physically secure and certain, non-failing, reliable.

Where the eye mixes sue and sure

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

3 ch
sue
4 ch
sure

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: sue is /sjuː/ while sure is /ʃɔː(ɹ)/. 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 (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 5187, derived from the frequency rank of both members and their visual similarity.

sue is recorded at frequency rank #4,985, classified as averb, pronounced /sjuː/. sure is at rank #202, tagged as anadj, pronounced /ʃɔː(ɹ)/.

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 5187, this pair ranks #516,276 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of sue vs sure

Shared letters: esu. Private to "sue": -. Private to "sure": r.

"sue" · 3 letters · shape CVV  ·  "sure" · 4 letters · shape CVCV

Known mistypes of this pair

  • suresrue · ssure · suer · surre · usre

Frequently Asked Questions

Can "sue" and "sure" be used interchangeably?
No - they are not even the same part of speech. "sue" is a verb and "sure" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "sue" or "sure"?
"sure" is the more common of the two: it sits at frequency rank #202 in our English list, against #4,985 for "sue". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "sue" and "sure". Here's where to go from here.

  • Full dictionary entry for "sue" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "sure" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #516,276 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "sue" and "sure" also get mixed up with nearby pairs, the highest-scored neighbour is "sue vs sura". 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

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list