ISOGRAPHS is a playable word

isograph Scrabble® Dictionary

noun
pl. isographs
a line on a map indicating areas that are linguistically similar
270 Playable Words can be made from "ISOGRAPHS"
   2-Letter Words (22 found)
   7-Letter Words (3 found)
   8-Letter Words (1 found)
   9-Letter Words (1 found)