Mammoth Uncensored Word List:
49 words ending with ys, 10 letters long

adversarys baldmoneys breakaways breezeways brickclays bridleways cellarways chromakeys churchways colourways cornerways cruiseways disemploys dispurveys doohickeys hairsprays horseplays interplays launchways leastaways lengthways masterkeys misemploys outjockeys permalloys photoplays ploughboys powerplays presurveys redisplays roundelays schoolboys schooldays sluiceways stableboys stageplays streetboys strideways swordplays throwaways thwartways timenoguys tinkertoys underclays underplays wednesdays yesterdays zebronkeys zircalloys