Words That End in X

2-letter words

Common: ax, ox

More: ex

3-letter words

Common: box, cox, fix, fox, lax, mix, sex, six, tax, vex, wax

More: fax, hex, lox, nix, pix, pox, pyx, sax, tux

Rare: dex, gox, kex, lex, lux, max, pax, rax, rex, sox, vox, zax

4-letter words

Common: apex, coax, crux, flex, flux, hoax, jinx

More: flax, ibex, lynx, minx, onyx, roux

Rare: calx, doux, eaux, falx, faux, ilex, jeux, oryx, prex

5-letter words

Common: affix, annex, index, infix, latex, relax

More: borax, calyx, codex, detox, helix, inbox, phlox, remix, telex, xerox

Rare: addax, admix, beaux, bemix, calix, carex, cimex, comix, culex, cylix, desex, dewax, galax, hapax, hyrax, immix, kylix, mirex, murex, radix, redox, redux, refix, remex, retax, rewax, silex, unbox, unfix, unmix, unsex, varix

6-letter words

Common: climax, convex, cortex, duplex, influx, larynx, matrix, pickax, prefix, reflex, sphinx, suffix, syntax, vortex

More: cervix, coccyx, cowpox, earwax, hatbox, icebox, lummox, outfox, pretax, prolix, surtax, thorax, tippex, unisex, vertex

Rare: adieux, afflux, auspex, banjax, biflex, bijoux, bollix, bollox, bombax, bombyx, caudex, commix, diplex, efflux, fornix, hallux, hotbox, mastix, meninx, nontax, outbox, paxwax, pegbox, phenix, poleax, pollex, premix, reflux, scolex, silvex, skybox, smilax, spadix, storax, styrax, subfix, syrinx, teabox, vernix, volvox

7-letter words

Common: anthrax, beeswax, complex, equinox, mailbox, paradox, perplex, phoenix, postbox, simplex

More: flummox, gateaux, gearbox, jukebox, overtax, perspex, phalanx, pharynx, pillbox, saltbox, sandbox, soapbox, spandex, toolbox

Rare: antefix, antisex, antitax, apteryx, aruspex, bandbox, bateaux, boombox, broadax, bureaux, carapax, cashbox, chamoix, coalbox, coannex, conflux, coteaux, feedbox, firebox, fowlpox, gravlax, hellbox, homosex, lockbox, milieux, minimax, narthex, oratrix, outjinx, overlax, overmix, packwax, panchax, pemphix, postfix, posttax, princox, reaffix, reannex, rectrix, reindex, reseaux, salpinx, sonovox, tectrix, tortrix, triplex, tubifex, woadwax, woodbox, woodwax, workbox

8-letter words

Common: appendix, crucifix, orthodox, smallpox

More: aviatrix, breadbox, cicatrix, cybersex, horsebox, lunchbox, matchbox, moneybox, paintbox, parallax, snuffbox, tableaux, transfix

Rare: aftertax, anthelix, bandeaux, batteaux, biconvex, bordeaux, chapeaux, chateaux, couteaux, curtalax, econobox, epicalyx, fabliaux, fourplex, haruspex, heretrix, heritrix, homeobox, horsepox, intermix, interrex, intersex, jambeaux, manteaux, microlux, millilux, morceaux, octuplex, plateaux, pontifex, precieux, quadplex, quincunx, rondeaux, rouleaux, sardonyx, saucebox, soundbox, spinifex, subindex, superfix, supersex, supertax, sweatbox, swinepox, toadflax, tonneaux, trumeaux, undertax, videotex

9-letter words

More: executrix, heterodox, letterbox, multiplex, shadowbox, strongbox, tinderbox

Rare: aboideaux, aboiteaux, directrix, disclimax, flambeaux, mediatrix, neocortex, pepperbox, priedieux, prothorax, retroflex, subclimax, testatrix

10-letter words

Common: anticlimax, chatterbox, circumflex, unorthodox

More: chickenpox, squeezebox, trousseaux

Rare: bordereaux, coadjutrix, generatrix, googolplex, inheritrix, mesothorax, metathorax, noncomplex, oropharynx, superhelix

11-letter words

Rare: fricandeaux, hydrothorax, hypopharynx, nasopharynx, neoorthodox, nonorthodox, overcomplex

12-letter words

Rare: heteroduplex, hypercomplex, pneumothorax, portmanteaux

13-letter words

Rare: archaeopteryx, cephalothorax, ultraorthodox

14-letter words

Rare: administratrix