Mammoth Uncensored Word List:
253 words ending with ss, 7 letters long

abscess absciss actress address adpress ageless aggress aidless aimless airless airmass allness ancress appress aptness armless artless ashless aweless awnless badness bagless barless bedless bibless bigness biomass bitless bowless braless budless bugloss burgess caddyss canvass capless carcass carless chapess cobless compass concuss confess corcass coxless coyness cubless cuirass cupless cutlass cypress declass degauss depress dewless digress dimness discuss dismiss doggess dogless dryness duchess dueness dulness dunness earless ebbless eggless eggmass egoless eldress empress endless engross express eyeless farness fatless fatness feeless fewness feyness finless fitness flyless fogless fulness furless gapless gasless gayness goddess godless gumless gunless gutless hapless hardass harness hatless heiress herdess hipless hipness hitless hostess hotness hueless iceless icemass iciness illness impress incross ingress ingross inkless innless ireless jackass jagless jawless jiveass jobless joyless kermess keyless kidless kinless kirmess koumiss koumyss largess lawless laxness legless lidless lioness lipless lowness madness manless mapless matless matrass matross napless negress netless newness nowness oakmoss oarless oddness oldness oneness oppress orbless outkiss outness outpass patness peeress pegless percuss petless pieless pinless pipless pitless poetess porpess portess possess precess premiss process profess prowess punless rawness rayless reclass recross redness redress regloss regress repress ribless rimless rodless rumless rumness runless sacless sadness sapless schloss seabass seeress setness sexless shiness shyness sinless slyness sodless sonless submiss success succuss sumless sunless surpass taxless tealess tieless tigress tipless toeless topless toyless treviss tubless tugless tutress twoness unbless uncross undress untruss useless usuress vendiss votress vowless waeness wanness warless wayless webless wetness wigless winless wiseass witless witness woeness wryness zebrass zipless