Loading word page…
Updated June 2026
Confident and certain about something.
“Are you sure you locked the door?”
/ʃʊə(r)/
Contains UE ending with common S and R.
Worth 4 points, good for word extensions.
Change a single letter of “sure” to make these 4-letter words — useful for Wordle and crossword clues.
5-letter words you can spell by adding one letter to “sure”.
Look up sure in an authoritative dictionary for full definitions, pronunciation, and etymology.
Download Word Challenge for unlimited word puzzles, a fresh Daily Challenge, and head-to-head multiplayer. Guess the hidden word in six tries or fewer!