ISOBAR is a playable word

isobar Scrabble® Dictionary

noun
pl. isobars
a type of atom
(adjective) isobaric
83 Playable Words can be made from "ISOBAR"
   2-Letter Words (13 found)
   3-Letter Words (30 found)
   5-Letter Words (7 found)
   6-Letter Words (1 found)