OVERSLIPPING is a playable word

overslip Scrabble® Dictionary

verb
overslipped or overslipt, overslipping, overslips
to leave out
917 Playable Words can be made from "OVERSLIPPING"
   2-Letter Words (24 found)
   3-Letter Words (89 found)
   10-Letter Words (1 found)
   12-Letter Words (1 found)