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Updated June 2026
abbreviation for isthmus; a narrow strip of land
“The isthm connected the peninsula to the mainland.”
"Isthm" uses 5 different letters, which makes it efficient for eliminating options. Its 1 vowel balance the consonants.
"Isthm" is worth 10 points before board bonuses. Aim its letters at double/triple-letter and word squares to lift the score.
Look up isthm in an authoritative dictionary for full definitions, pronunciation, and etymology.

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