6-letter words with S as the 4th letter and I as the 5th letter

With S and I locked into the last third of the word, the pattern still has 108 entries. RUSSIA, CRISIS, COUSIN, THESIS, FOSSIL, GOSSIP, RAISIN, and STASIS show its range. Eight words meet the common-word cutoff, and the ending letters spread from S and E to N, L, and A.

Pattern facts at a glance

• 108 entries have S fourth and I fifth.
• P begins 15 words, and C begins 13.
• S ends 31 entries; E ends 24.
• ZOYSIA scores 18, ahead of PHYSIC at 16.

Which endings help sort the SI cluster?

S is the most frequent ending, appearing 31 times; E follows at 24, then N at 12 and L at nine. Familiar examples illustrate the split: CRISIS, STASIS, and GOSSIP end in S, while THESIS and LASSIE finish in E. FOSSIL and TONSIL point toward the L group.

P starts 15 entries and C starts 13, with M and T each opening nine. The top examples span several starting letters, including RUSSIA, COUSIN, RAISIN, and PHYSIO. Pairing an opening with the ending gives a better filter than treating the fixed SI as a complete clue.

Where do the highest scores come from?

ZOYSIA scores 18 points, PHYSIC 16, and PHYSIO, PHYSIS, JASSID, and SIKSIK each reach 14. Those score leaders are less familiar than THESIS or COUSIN. Save them for a rack that supports every letter, then confirm the word in the dictionary used for your game.

8 points, and 76 of 108 entries have definitions recorded. Yet common vocabulary accounts for only eight.

This pattern has many defined forms outside everyday use, so familiar anchors should drive clue solving while the full set remains useful for checking a tight board fit. Match those fixed slots against the rack before spending a turn on a weak guess.