OVERFILL is a playable word

overfill Scrabble® Dictionary

verb
overfilled, overfilling, overfills
to fill to overflowing
105 Playable Words can be made from "OVERFILL"
   2-Letter Words (12 found)
   3-Letter Words (24 found)
   6-Letter Words (5 found)
   8-Letter Words (1 found)