SUBGROUPING is a playable word

subgroup Scrabble® Dictionary

verb
subgrouped, subgrouping, subgroups
to divide into smaller groups
393 Playable Words can be made from "SUBGROUPING"
   2-Letter Words (20 found)
   3-Letter Words (81 found)
   9-Letter Words (3 found)
   11-Letter Words (1 found)