LAIN is a playable word

lie Scrabble® Dictionary

verb
lay, lain, lying, lies
to be in or get into a horizontal position
verb
lied, lying, lies
to speak falsely
15 Playable Words can be made from "LAIN"
   2-Letter Words (7 found)
   3-Letter Words (5 found)
   4-Letter Words (3 found)