Mammoth Uncensored Word List:
268 words ending with ks, 5 letters long

amoks araks atoks backs balks banks barks basks bauks beaks becks berks bilks binks birks bisks boaks bocks bonks books borks bosks bouks braks briks bucks buiks bulks bunks burks busks calks carks casks cauks cawks chiks cocks conks cooks corks cowks cusks dacks danks darks dawks decks desks dhaks dicks dinks dirks disks docks doeks dooks dorks douks dreks ducks dunks dusks faiks fanks fecks fenks finks firks fisks flaks folks forks fucks funks gawks gecks geeks ginks gonks gooks gouks gowks groks gucks gunks hacks haiks hanks harks hasks hawks hecks hicks hocks hoiks holks honks hooks howks hucks hulks hunks husks jacks jarks jauks jerks jinks jocks jooks jouks junks kaiks karks kecks keeks kicks kinks kirks kliks konks kooks kyaks lacks laiks lanks larks lawks leaks leeks licks links lirks lisks locks looks lucks lunks lurks lusks macks maiks marks masks mawks mecks merks micks milks minks mirks mocks monks mooks mosks mucks murks musks nabks naiks narks necks nerks neuks nicks nocks nooks norks oinks oulks packs paiks parks pawks peaks pecks peeks penks perks picks pinks pocks polks ponks pooks porks pouks pucks pulks punks racks raiks ranks rarks reaks recks reeks reiks ricks rinks risks rocks rooks rucks rusks sacks sarks seeks serks sicks silks sinks soaks socks sooks souks speks spiks sucks sulks sunks tacks talks tanks tasks teaks ticks tinks tocks tonks touks treks tucks turks tusks volks wacks walks wanks warks wauks weeks welks wicks winks wocks wonks works yacks yanks yarks yelks yerks yesks yeuks yirks yocks yolks yonks yorks youks yucks zacks zerks zonks zooks zouks