SHELLED is a playable word

shell Scrabble® Dictionary

verb
shelled, shelling, shells
to divest of a shell (a hard outer covering)
51 Playable Words can be made from "SHELLED"
   2-Letter Words (7 found)
   3-Letter Words (14 found)
   5-Letter Words (8 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)