UPTHROWING is a playable word

upthrow Scrabble® Dictionary

verb
upthrew, upthrown, upthrowing, upthrows
to throw upward
339 Playable Words can be made from "UPTHROWING"
   2-Letter Words (23 found)
   3-Letter Words (87 found)
   8-Letter Words (6 found)
   9-Letter Words (1 found)
   10-Letter Words (1 found)