Mole
4 lettersnounmoderateUpdated June 2026
Definition
The SI base unit of amount of substance, defined as the quantity containing the same number of entities as there are atoms in exactly 12 grams of carbon-12.
“One mole of any gas at standard temperature and pressure occupies approximately 22.4 litres.”
Pronunciation
IPA
/məʊl/
Related Words
Word Game Tips
Wordle
A very common four-letter word pattern, M-O-L-E covers solid Wordle territory with no tricky letters
Scrabble
Worth 6 points, common word with multiple meanings, front-hooks with G, H, V to form guacamole-adjacent words
Words Related to Mole
Words one letter different
Change a single letter of “mole” to make these 4-letter words — useful for Wordle and crossword clues.
Add a letter to make a longer word
5-letter words you can spell by adding one letter to “mole”.
Explore Similar Words
Try These Tools
Dictionary References
Look up mole in an authoritative dictionary for full definitions, pronunciation, and etymology.
Ready to test your word skills?
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!