6-letter words with U as the 3rd letter and M as the 4th letter

That fixed UM pair leaves the first two and final two letters open, creating a mix of familiar plurals and less common forms. ALUMNI, THUMBS, and GRUMPY show how differently the pattern can finish. Only 7 matches count as common by English frequency, so recognition alone will not cover the full set.

At a glance: the UM pattern

• There are 71 matches across tournament dictionaries: 70 in Collins, 60 in NWL2023, and 56 in ENABLE.
• CHUMMY leads the Scrabble scores at 18 points; FRUMPY, THUMBY, and WHUMPS each score 16.
• A final S appears in 30 words, while Y closes 21.
• Only 7 matches rank among common English words, so the pattern includes plenty of uncommon plays.

Which letters start and end these words?

C is the most frequent first letter, with 12 matches; S follows with 11, then G with 10. Examples include CLUMSY, SCUMMY, and GRUMPY. Those openings give you useful branches when a puzzle already fixes U and M in the middle.

The endings are much less evenly spread: S and Y together close 51 words. Think of THUMBS, CRUMBS, and STUMPS for S, then CLUMSY, FRUMPY, and STUMPY for Y. Just 7 matches end in D, making that route a narrower search.

How can you use the pattern in a word game?

For Scrabble scoring, CHUMMY is the standout at 18 points, with its H and two M tiles supplying much of the value. FRUMPY, THUMBY, and WHUMPS are close behind at 16. A premium square under a high-value tile can change a play’s result, so check the board before choosing a word.

For 6-letter words with U as the 3rd letter and M as the 4th letter, the dictionary split matters: one match is absent from Collins, and 11 are absent from NWL2023. The full set is not a list of everyday vocabulary; check your game’s word list before relying on a less familiar entry.