CHAMPIONING is a playable word

champion Scrabble® Dictionary

verb
championed, championing, champions
to defend or support
311 Playable Words can be made from "CHAMPIONING"
   2-Letter Words (25 found)
   3-Letter Words (79 found)
   9-Letter Words (1 found)
   10-Letter Words (1 found)
   11-Letter Words (1 found)