BUILDUPS is a playable word

buildup Scrabble® Dictionary

noun
pl. buildups
an accumulation
74 Playable Words can be made from "BUILDUPS"
   2-Letter Words (8 found)
   3-Letter Words (29 found)
   5-Letter Words (7 found)
   6-Letter Words (1 found)
   7-Letter Words (2 found)
   8-Letter Words (2 found)