7-letter words with I as the 1st letter and S as the 2nd letter

Only four of these 57 entries are classed as common, so the familiar I-S opening leads quickly into less everyday vocabulary. ISLANDS and ISSUING are recognizable anchors; ISAGOGE and ISOAMYL are less familiar. The first two letters stay fixed, but the endings range from E and S to Y, N, and T.

The I-S pattern at a glance

• The pattern contains 57 seven-letter entries across tournament dictionaries.
• Collins includes 57 matches, compared with 42 in NWL2023 and 40 in ENABLE.
• Only four matches rank among the common English entries.
• The most frequent endings are E, with 14 words, and S, with 13.
• ISOZYME tops the scoring list at 21 points.

Which 7-letter words with I first and S second score highest?

ISOZYME is the clear scoring standout at 21 points. Its Z supplies the biggest boost among these words, while the opening I and S keep the pattern intact.

ISCHIUM, ISOPACH, and ISTHMIC each score 14; ISOGAMY and ISOHYET follow at 13. More familiar-looking choices score less: ISTHMUS, ISOFORM, and ISOTYPE each reach 12. If you are choosing a play, check that the word appears in your game's dictionary before relying on its score.

What to know about 7-letter words with I first and S second

The final letter offers a useful sorting clue: E and S together account for 27 of the 57 entries, just under half. ISOLATE ends in E, while ISLANDS and ISSUERS end in S; ISOTOPE also joins the E-ending group.

The count changes by dictionary: Collins has all 57 matches, while NWL2023 has 42 and ENABLE has 40. That gap matters in tournament play, where a word accepted in one list may not work in another. The pattern is also a poor source of everyday guesses: just four entries are classed as common.