SUBZONE is a playable word

subzone Scrabble® Dictionary

noun
pl. subzones
a subdivision of a zone
70 Playable Words can be made from "SUBZONE"
   2-Letter Words (13 found)
   3-Letter Words (27 found)
   5-Letter Words (8 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)