OVERFLOW is a playable word

overflow Scrabble® Dictionary

verb
overflowed, overflown, overflowing, overflows
to flow over the top of
79 Playable Words can be made from "OVERFLOW"
   2-Letter Words (13 found)
   3-Letter Words (24 found)
   5-Letter Words (7 found)
   6-Letter Words (7 found)
   8-Letter Words (1 found)