LETHALLY is a playable word

lethally Scrabble® Dictionary

adverb
in a deadly manner
86 Playable Words can be made from "LETHALLY"
   2-Letter Words (15 found)
   3-Letter Words (31 found)
   5-Letter Words (7 found)
   6-Letter Words (6 found)
   8-Letter Words (1 found)