SUFFIXING is a playable word

suffix Scrabble® Dictionary

verb
suffixed, suffixing, suffixes
to add as a suffix (a form affixed to the end of end of a word)
68 Playable Words can be made from "SUFFIXING"
   2-Letter Words (10 found)
   3-Letter Words (23 found)
   4-Letter Words (18 found)
   5-Letter Words (11 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)
   9-Letter Words (1 found)