BACKPACK is a playable word

backpack Scrabble® Dictionary

verb
backpacked, backpacking, backpacks
to hike with a pack on one's back
23 Playable Words can be made from "BACKPACK"
   2-Letter Words (5 found)
   3-Letter Words (9 found)
   4-Letter Words (6 found)
   5-Letter Words (2 found)
   8-Letter Words (1 found)