for sure

prep_phrase

"for-sure" is a 7-letter English headword indexed on PlainSpell.

The verdict

“for sure” is outside the top-ranked English vocabulary, used as a prep_phrase - the kind of word writers most often double-check.

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Definitely, positively, without a doubt.

Key facts for for sure
PropertyValue
Headwordfor sure
LanguageEnglish
Part of speechPrep_phrase
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “for sure” sits in English frequency

for sure falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for for sure is 8 letters long, classified as a prep_phrase. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "Definitely, positively, without a doubt.".

Zero misspellings are on record for for sure in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. No confusable counterpart is on file for this word, a sign it's visually distinctive enough not to be mixed up with another word.

This entry carries no recorded etymology, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is for sure, spelled F-O-R- -S-U-R-E.

Definition

  1. 1
    Definitely, positively, without a doubt.

Synonyms

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "for sure"?
"for sure" is spelled F-O-R- -S-U-R-E.
What does "for sure" mean?
As a prep_phrase, "for sure" means: Definitely, positively, without a doubt.
What language does "for sure" come from?
"for sure" is a English word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “for sure”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is F-O-R- -S-U-R-E - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list