ISOGLOSSES is a playable word

isogloss Scrabble® Dictionary

noun
pl. isoglosses
a line on a map between linguistically varied areas
116 Playable Words can be made from "ISOGLOSSES"
   2-Letter Words (12 found)
   3-Letter Words (24 found)
   7-Letter Words (6 found)
   8-Letter Words (2 found)
   10-Letter Words (1 found)