6-letter words with M as the 4th letter and O as the 5th letter

The fixed pattern is _ _ _ M O _, so the first three letters and final letter do all the distinguishing. Familiar finds include SALMON, SERMON, SUMMON, COSMOS, and TREMOR. Only five of the 52 entries fall within the top 25,000 English words by frequency, so expect a mix of everyday vocabulary and specialist or less familiar plays.

The pattern at a glance

• There are 52 tournament-dictionary words with M fourth and O fifth.
• SALMON, SERMON, SUMMON, COSMOS, and TREMOR are recognizable examples.
• Only five entries rank among the top 25,000 English words by frequency.
• The average word score is 11; ZHOMOS leads the scoring list at 20.
• Collins includes 51 matches, compared with 40 in NWL2023 and 39 in ENABLE.

Which letters start and end these words most often?

S starts the most words in this pattern: 10 entries begin with S. C and D tie next, with 7 apiece, while G begins 6. That makes the first letter a useful narrowing clue, but it does not identify a single word.

The final letter is more concentrated. Twenty entries end in S, and 14 end in N; together, those two endings dominate the pattern. If your board or puzzle rules out both, the remaining endings are R, L, T, E, I, and W.

6-letter words with M as the 4th letter and O as the 5th letter

For scoring, ZHOMOS tops the score ranking at 20 points. GIZMOS follows at 18, while LUMMOX and HAYMOW each score 17. The more familiar GIZMOS is easier to recognize, but the less obvious entries can be valuable when their letters fit your rack.

Twelve of the 52 matches are absent from at least one of the three tournament lists, since Collins, NWL2023, and ENABLE cover 51, 40, and 39 respectively. Those totals overlap; they are not separate groups to add together. A word accepted in one game may fail in another, so check your game's word list before playing an unfamiliar entry.

The small common-word count is the main limitation here: many matches are unlikely to come to mind unaided.

A practical solving order is to test likely endings first: S and N account for the largest groups, then check the opening letters against the remaining tiles. That approach uses the pattern’s strongest split instead of guessing from the middle, which is already fixed.