Mammoth Uncensored Word List:
94 words ending with x, 6 letters long

adieux afflux auspex banjax bembex bembix biflex bijoux bollix bollox bombax bombyx boyaux carfax carfox carnyx caudex cervix chenix climax coccyx commix confix convex cortex cowpox deflex dentex diplex duplex earwax efflux forfex fornix frutex hallux handax hatbox haybox hotbox icebox imbrex implex influx isolex jawbox larnax larynx lummox magnox mastix matrix meninx muskox nontax orifex outbox outfox paxwax pegbox phenix pickax poleax pollex prefix premix pretax prolix reflex reflux scolex silvex skybox smilax spadix sphinx sphynx storax styrax subfix suffix surtax syntax syrinx teabox tettix thorax tutrix unisex vernix vertex volvox vortex windex