DIPLEX is a playable word

diplex Scrabble® Dictionary

adjective
pertaining to the simultaneous transmission or reception of two radio signals
40 Playable Words can be made from "DIPLEX"
   2-Letter Words (9 found)
   3-Letter Words (15 found)
   4-Letter Words (12 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)