SEASIDE is a playable word

seaside Scrabble® Dictionary

noun
pl. seasides
the seashore
70 Playable Words can be made from "SEASIDE"
   2-Letter Words (11 found)
   3-Letter Words (17 found)
   5-Letter Words (13 found)
   6-Letter Words (6 found)
   7-Letter Words (2 found)