Mammoth Uncensored Word List:
53 words ending with bs, 4 letters long

abbs albs arbs bibs bobs bubs cabs cobs cubs dabs dibs dobs dubs ebbs fibs fobs fubs gabs gibs gobs gubs hobs hubs jabs jibs jobs kabs kebs kobs labs lobs mibs mobs nabs nebs nibs nobs nubs orbs pubs rebs ribs robs rubs sabs sobs subs tabs tubs vibs wabs webs yobs