The List
There are 404 7 letter words with K as the last letter. The highest scoring is WAZZOCK at 34 points in Scrabble. 106 carry three or more vowels, which makes them useful for dumping a vowel-clogged rack.
AIRLOCKAIRPARKAIRSICKAMTRACKANGAKOKANGEKOKARABESKARMLOCKARTWORKBANDOOKBANGKOKBANNOCKBARRACKBASHLIKBASHLYKBAWCOCKBEATNIKBECHALKBECLOAKBEDROCKBEDTICKBEFLECKBELLEEKBELLOCKBERSERKBESPEAKBESTICKBESTUCKBETHANKBETHINKBIBCOCKBIOBANKBITTOCKBLAUBOKBLESBOKBLOUBOKBONNOCKBOOBOOKBOSHBOKBOYCHIKBULLOCKBULWARKBUMMOCKBUNDOOKBURDOCKBURLESKBUTTOCKBUYBACKCALPACKCANBANKCANDOCKCAPROCKCARJACKCARLOCKCARRACKCARRICKCARSICKCASSOCKCASTOCKCATWALKCHABOUKCHAMPAKCHETNIKCHEWINKCHIBOUKCHINOOKCOMATIKCONTECKCOSSACKCOWLICKCROMACKCUSTOCKCUTBACKCUTBANKCUTWORKDADDOCKDAGLOCKDAWCOCKDAYBOOKDAYMARKDAYPACKDAYSACKDAYWORKDEFROCKDERRICKDESTOCKDHANSAKDIEBACKDIQUARKDISBARKDISLINKDISMASKDISPARKDISRANKDORHAWKDORNECKDORNICKDORNOCKDUNNOCKDVORNIKEARLOCKEARMARKEARPICKELFLOCKEYEBANKEYEHOOKEYEWINKFARTLEKFATBACKFETLOCKFINBACKFINMARKFINNACKFINNOCKFLYBACKFLYBOOKFORSOOKFOSSICKFUTHARKFUTHORKFUTTOCKGALLOCKGAMMOCKGARVOCKGEELBEKGEMSBOKGENLOCKGEODUCKGERENUKGIMMICKGORCOCKGOSHAWKGRYSBOKGUNLOCKGWEDUCKHADDOCKHAMMOCKHASSOCKHATRACKHATTOCKHAUBERKHAWBUCKHAYCOCKHAYFORKHAYRACKHAYRICKHEMLOCKHENPECKHEYDUCKHILLOCKHOGBACKHOMMOCKHOOLOCKHOPSACKHORDOCKHOTLINKHUMMOCKICEPACKINBREAKJANNOCKJAYWALKJONNOCKJUMBUCKKEBBOCKKEBBUCKKILLICKKILLOCKKINFOLKKOMATIKKOPIYOKLAPWORKLASSOCKLAVROCKLAWBOOKLAYBACKLAYLOCKLEGWORKLENTISKLIMBECKLOGBOOKLUSTICKLUTFISKMADDOCKMAFFICKMAMMOCKMANJACKMANPACKMATTOCKMEACOCKMENFOLKMERFOLKMETHINKMIDWEEKMILCHIKMIMMICKMINNICKMINNOCKMISCOOKMISKICKMISLUCKMISMARKMISTEUKMISTOOKMOLLUSKMUDHOOKMUDLARKMUDPACKMUDROCKMULLOCKMUMMOCKMUNTJAKNEATNIKNETWORKNIBLICKNIDDICKNITPICKNONBANKNONBOOKNONPEAKNONWORKNUDNICKNUNATAKNUTPICKOARLOCKOBELISKODALISKOFFPEAKOLICOOKOLYCOOKOLYKOEKOOMIACKOPGEFOKOSTMARKOUTBACKOUTBARKOUTBULKOUTCOOKOUTKICKOUTLOOKOUTRANKOUTROCKOUTSULKOUTTALKOUTTASKOUTTOOKOUTWALKOUTWICKOUTWORKPADDOCKPADLOCKPANNICKPARROCKPARTOOKPATRICKPAYBACKPEACOCKPELLACKPELLOCKPEPTALKPERJINKPERTOOKPETCOCKPIDDOCKPILLOCKPINNOCKPINWORKPOLLACKPOLLOCKPOPSOCKPORLOCKPOTHOOKPOTLUCKPREBOOKPRECOOKPREDUSKPREJINKPREPACKPREROCKPRESOAKPREWORKPUDDOCKPUGMARKPUTCHUKPUTLOCKPUTTOCKRAGWORKRAMPICKRANSACKRATFINKRATPACKRECHECKREDBACKREDNECKREITBOKRESPEAKRESTACKRESTOCKRETHINKRETRACKRIBWORKRIMROCKROEBUCKROLLICKROLLOCKROOINEKROWLOCKRUDDOCKRULLOCKRUNBACKRYEPECKSAWBUCKSCHLOCKSCHMECKSCHMICKSCHMOCKSCHMUCKSCHNOOKSCHTICKSCHTOOKSCHTUCKSEABANKSEACOCKSEAFOLKSEAHAWKSEAMARKSEASICKSETBACKSHASLIKSHYLOCKSILLOCKSJAMBOKSKYHOOKSKYJACKSKYLARKSKYWALKSONGKOKSOUROCKSOUSLIKSOWBACKSOYMILKSPELUNKSPUTNIKSTEMBOKSTOMACKSUBFUSKSUBTACKSUBTASKSUNBACKSUNDECKTANBARKTARROCKTIEBACKTIETACKTINTACKTINWORKTITLARKTOKAMAKTOKOMAKTOMBACKTOPKICKTOPWORKTOWSACKTRIPACKTSADDIKTUGHRIKTUSSOCKTUSSUCKTUTWORKTZADDIKUNBLOCKUNCHECKUNCLOAKUNDRUNKUNFROCKUNSLICKUNSNECKUNSPEAKUNSTACKUNSTICKUNSTOCKUNSTUCKUNTHINKUNTRACKUPBREAKUPCHUCKUPSPEAKVETKOEKVOETSAKVOETSEKWAESUCKWARLOCKWARWORKWAXWORKWAYMARKWAZZOCKWEBWORKWEDLOCKWINDOCKWINNOCKWRYNECKYASHMAKZADDICKZAMBUCKZIPLOCK