PREPLANNING is a playable word

preplan Scrabble® Dictionary

verb
preplanned, preplanning, preplans
to plan in advance
376 Playable Words can be made from "PREPLANNING"
   2-Letter Words (19 found)
   8-Letter Words (6 found)
   9-Letter Words (3 found)
   10-Letter Words (1 found)
   11-Letter Words (1 found)