The only word is yuked, which is in the slang dictionary. The definition is "to vomit".
aboardattainattackcanardcreamydamagedebatedepartdetachdisarmdreamyembalmembarkentailescapeexhaleexpandgaragegreaseharassheraldhumanehomageimpactimpartinfantinhaleinnateinsaneintakemanagemirageparadephrasepleaserecallregardrelaterepairremainremarkrenameresaleretakeretainscrapesheathsilagesprawlshrankstraitstrainthrashtruantunfairunmaskunpackunpaidwreath
lawyerfrayedgrayermartyrplayerprayedprayerpraysslayedredyeredyedslayerstayedswayedtrays
Shoots.
walkedwalkerweakenweakerweaklyweeklywickedwinkedworkedworker
blurryblurtschurchchurnsflurryfourthhourlymournspouredscurryslurpssouredspurnssturdytoured
scamps
ladled,lulled,ladles,
sachet
Some six letter words with the fourth letter U are:absurdaccuseacquitactualadjustambushamountannualaroundarouseassumeassureastuteaugustautumnbeautyblousecasualclausecolumncrouchdeductdefusedeludedelugedeluxedemuredenudedeputydiluteendureengulfenoughensureexcuseexhumefigurefuturegerundgrouchgroundgrouseimmuneimmureimpureimputeinduceinductinfuseinjureinsultinsurejaguarjejunejujubekabukilegumeliquidliquorlocustluxurymanualmanurematureMedusaminuetminutemisusemodulemutualnaturenebulanoduleobtuseoccultoccupyperuseploughpseudorebuffrebukereducerefuelrefugerefundrefuserefuteresultresumereturnrobustrotundsalutesecureseducesequelsequinsexualshouldstrucksuburb
Toucan is the word.
Deline
Some six letter words with the fourth letter U are:abductaboundabruptabsurdaccuseacquitactualadjustalludeallureambushamountampuleannualaroundarousearoundarouseassumeassureastuteauburnaugustautumnbeautybelugabemuseblousecasualclausecloudycolumncrouchdebunkdeducedeductdefusedeludedelugedeluxedemuredeputydiluteeffuseendureengulfenoughensureeunuchexcuseexhumefecundfibulafigureflauntfuturegerundgrouchgroundgrouseimmuneimmureimpugnimpureimputeinduceinductinfuseinjureinsultinsurejaguarjejunejujubekabukikahunalegumeliquidliquorlocustluxurymanualmanurematureminuetminutemisusemodulemutualnaturenebulanoduleobtuseoccultoccupyonrushpenuryperuserebuffrebukereducerefugerefundrefuserefutereputeresultresumereturnritualrobustrotundsalutesecureseducesequelsequinsexualshouldshrunksleuthslouchspousesprucesprungstruckstrungsuburbsuturetenurethoughthrushthrusttraumatroughtroupetubuletumultuncurlundulyunfurlunjustunrulyunsungunsureupturnvacuumvicunavisualvolumeyogurt