BULKING is a playable word

bulk Scrabble® Dictionary

verb
bulked, bulking, bulks
to gather into a mass
50 Playable Words can be made from "BULKING"
   2-Letter Words (7 found)
   3-Letter Words (21 found)
   4-Letter Words (16 found)
   5-Letter Words (3 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)