Mammoth Uncensored Word List:
108 words ending with x, 8 letters long

aftertax anthelix appendix aviatrix bandeaux batteaux berceaux biconvex bithorax blackbox blackpox bobbysox bordeaux brainbox breadbox camaieux carnifex chapeaux chateaux cicatrix cineplex clackbox clangbox clavivox coturnix couteaux creatrix crucifix curatrix curtalax cybersex disannex earthwax econobox epicalyx fabliaux fourplex genetrix genitrix giambeux glovebox haruspex heretrix heritrix homeobox horsebox horsepox intermix interrex intersex jambeaux janitrix lightbox loosebox lunchbox manteaux matchbox megaplex microlux millilux mirepoix moneybox morceaux mousepox nonlatex octuplex opopanax orthodox paintbox parallax phorminx plateaux ponceaux pontifex precieux pressbox quadplex quincunx rondeaux rouleaux sardonyx saucebox scrumpox sheeppox sixtysix smallpox snuffbox soundbox spinifex subindex superfix supermax supersex supertax sweatbox swinepox tableaux toadflax tonneaux tractrix transfix trumeaux undertax videotex voicebox watchbox waterpox zelatrix