7-letter words with S as the 2nd letter and O as the 5th letter

The pattern is _S__O__, with S fixed in slot two and O in slot five. ISOTOPE and ISOFORM show its most recognizable shape, but the pool is narrow: only 2 entries count as common by frequency. Collins lists all 33 matches, while NWL2023 accepts 21 and ENABLE accepts 20.

7-letter words with S as the 2nd letter and O as the 5th letter

• The fixed pattern _S__O__ matches 33 words across the tournament dictionaries.
• Sixteen matches begin with I; E and O are the next most common first letters, with 6 and 5 words.
• The most frequent final letters are S, with 11 matches, and E, with 10.
• The average tile score is 9, and the top score is 12.
• Only 2 matches qualify as common by frequency, so expect many unfamiliar entries.

Why do so few words fit this pattern?

The second-letter S funnels this search toward words such as ISOTOPE, ISOFORM, ISOPODS, ISOTOPY, and ISONOMY. Sixteen of the 33 matches start with I, compared with 6 beginning with E and 5 with O. If the first letter is unknown, testing I first covers the largest group.

A and U start 4 and 2 matches. Together, the five vowels I, E, O, A and U open all 33 words, so a consonant opener never fits.

Scores and endings to check

ISOFORM, ESCROWS, ISOTOPY, and ISONOMY share the highest score, 12 points each. ISOPODS scores 10. These are base tile totals; board premiums change the result, so place a high-value tile on a bonus square when the board allows it.

For 7-letter words with S as the 2nd letter and O as the 5th letter, endings narrow the search quickly: 11 finish in S and 10 in E. ISOPODS and ESCROWS illustrate the S ending; ISOTOPE gives the E ending. Dictionary coverage also varies by game, so check your game's word list before relying on a less familiar match.