Mammoth Uncensored Word List:
94 words ending with sh, 10 letters long

accomplish amateurish anglerfish archerfish awkwardish backsheesh backsplash balderdash boosterish bounderish broadbrush buffoonish bugbearish bumpkinish butterfish buttonbush candlefish cartoonish cockneyish colourwash coquettish countryish cuttlefish damselfish disfurnish disgarnish displenish dollarfish empoverish extinguish flapperish flunkeyish folklorish genteelish gluttonish gooseflesh greasebush griffinish groundfish guitarfish hammerfish heathenish hidalgoish hobblebush hoodlumish horseflesh impoverish mackintosh madonnaish microflash mugwumpish multiflash muttonfish needlefish outlandish overlavish overpolish overpunish overravish paddlefish paintbrush pantherish parrotfish peacockish pebbledash phantomish photoflash picayunish pufferfish rabbitfish rainsplash relinquish ribbonfish ruffianish sheathfish shrimpfish silverfish sparrowish stonebrash suckerfish sybaritish throatlash tomfoolish toothbrush tripperish trollopish unactorish unchildish underbrush velvetfish vinegarish werwolfish woodthrush yellowfish