6-letter words with O as the 5th letter and I as the 6th letter

Every match ends in OI, but the openings vary: S and T lead the reported first-letter counts with three words apiece. None is classed as common, so this clue rewards letter placement more than everyday vocabulary. Sixteen entries are defined, yet these rare forms make dictionary coverage a separate concern.

The pattern at a glance

• All 17 matches place O fifth and I sixth, so the final two tiles are fixed.
• BORZOI leads the score table at 17 points; XYSTOI follows at 16.
• EXODOI, MYTHOI, and SAKKOI each score 14 points.
• Collins includes all 17; NWL2023 accepts 12 and ENABLE accepts 10.
• Zero entries are classed as common, despite 16 having definitions.

Which O-I words score highest?

BORZOI is the clearest scoring target: its 17 points put it one above XYSTOI, while EXODOI, MYTHOI, and SAKKOI tie at 14. The lead comes from BORZOI’s valuable letters, not extra length; every answer has six tiles.

A strong rack score does not mean easy recall. OCTROI and RENVOI sit alongside BORZOI, but none of these matches is classed as common. Recognizing the unusual OI ending matters more here than relying on familiar everyday vocabulary.

The final I sharply narrows the group. Keeping O fifth but changing the last tile to S gives 352 matches; changing it to N gives 277. Compared with those sibling patterns, the 17-word OI group is a tight filter.

How should you use 6-letter words with O fifth and I sixth?

S and T each lead the reported starting-letter counts with three entries. The examples are SACCOI, SAKKOI, and SIGLOI for S; TATSOI, THOLOI, and TOITOI for T. Use those clusters to check a possible opening, but do not treat either initial as a sign of common vocabulary.

Dictionary coverage changes the practical list. Collins includes all 17 matches, compared with 12 in NWL2023 and 10 in ENABLE. A word accepted in one list is not automatically accepted in another, so check your game's word list before committing a rare form such as PITHOI or XYSTOI.