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

The frame is _ _ C _ _ M, so the third and sixth slots are set and four tiles do the sorting. VICTIM, VACUUM, and LYCEUM are the ones most players spot first, but the group runs deeper into Latin borrowings such as DICTUM, SACRUM, and FACTUM. Only three rank as common, and the average score sits at a high 11.5.

What the 16 _ _ C _ _ M words share

• 16 tournament words fit the frame _ _ C _ _ M, all ending in M.
• Ten of them finish in -UM, from VACUUM and DICTUM to NICKUM.
• BECALM and ENCALM close on -LM instead.
• L, R, S, and V each open two words, the joint most.
• NICKUM tops the scores at 14; VICTIM, VACUUM, LYCEUM, SACHEM, and FACTUM reach 13.
• Collins lists all 16, NWL2023 13, and ENABLE 12.

The -UM tail that defines the list

Ending on M is the one habit every word here shares. The -UM pattern goes further, covering ten of the sixteen: VACUUM, DICTUM, SACRUM, FACTUM, TECTUM, PACTUM, LYCEUM, AECIUM, and NICKUM all close on those two letters.

Just two words leave that groove. BECALM and ENCALM carry an -LM tail plus the be- and en- prefixes, and both are verbs about settling down.

Scores and the neighbouring patterns

NICKUM is the outlier at 14, a clear point ahead of the pack. VICTIM, VACUUM, LYCEUM, SACHEM, and FACTUM all land on 13, and PACTUM and BECALM follow on 12. Most of the set packs into 10 to 13, which is what pushes the average up to 11.5.

Set against nearby patterns, the group looks thin. N third with M last holds 35 words, R third holds 35, and L third 31, so C is nowhere near the busiest middle letter. Seven-letter pages with C third and M last add 25 more.