for sure

prep_phrase

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

The verdict

“for sure” is uncommon English (outside the top frequency list), classed as a prep_phrase. The kind of spelling people second-guess.

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Definitely, positively, without a doubt.

Corpus desk

Index EN-for-sure · for sure · English

for sure · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "F" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

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

Long-tail rank of “for sure” in English

for suresits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

for sure is uncommon English outside the top frequency list, classed as aprep_phrase. Rarity is why readers land here mid-draft. Gloss: "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.

Recorded use

Wiktionary examples

These source excerpts show how for sure appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. I would buy one of those for sure.
  2. Did you enjoy the concert? —For sure.

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.

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

Source: FrequencyWords open word-frequency list