SUBTLY is a playable word

subtle Scrabble® Dictionary

adjective
subtler, subtlest
so slight as to be difficult to detect
(adverb) subtly
25 Playable Words can be made from "SUBTLY"
   2-Letter Words (3 found)
   3-Letter Words (9 found)
   4-Letter Words (8 found)
   5-Letter Words (3 found)
   6-Letter Words (2 found)