ISTHMIC is a playable word

isthmic Scrabble® Dictionary

adjective
pertaining to an isthmus
48 Playable Words can be made from "ISTHMIC"
   2-Letter Words (8 found)
   3-Letter Words (16 found)
   4-Letter Words (16 found)
   5-Letter Words (5 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)