MOSAICKING is a playable word

mosaic Scrabble® Dictionary

verb
mosaicked, mosaicking, mosaics
to form into a mosaic (a type of inlaid surface decoration)
364 Playable Words can be made from "MOSAICKING"
   2-Letter Words (23 found)
   8-Letter Words (5 found)
   10-Letter Words (1 found)