QUADPLEX is a playable word

quadplex Scrabble® Dictionary

noun
pl. quadplexes
a building having four units
84 Playable Words can be made from "QUADPLEX"
   2-Letter Words (14 found)
   3-Letter Words (30 found)
   5-Letter Words (10 found)
   6-Letter Words (2 found)
   8-Letter Words (1 found)