ISOGRIV is a playable word

isogriv Scrabble® Dictionary

noun
pl. isogrivs
a line drawn on a map such that all points have equal grid variation
32 Playable Words can be made from "ISOGRIV"
   2-Letter Words (8 found)
   3-Letter Words (12 found)
   4-Letter Words (7 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)