SEISM is a playable word

seism Scrabble® Dictionary

noun
pl. seisms
an earthquake
(adjective) seismal, seismic
23 Playable Words can be made from "SEISM"
   2-Letter Words (6 found)
   3-Letter Words (7 found)
   4-Letter Words (7 found)
   5-Letter Words (3 found)