ONBOARD is a playable word

onboard Scrabble® Dictionary

verb
onboarded, onboarding, onboards
to train a new person to do a job
91 Playable Words can be made from "ONBOARD"
   2-Letter Words (13 found)
   3-Letter Words (32 found)
   6-Letter Words (2 found)
   7-Letter Words (2 found)