Some six letter words:first and fourth letter is the samesecond and sixth letter being the same:BalboaBeebeeBoobooCanchaCoocooIndignKeckleMuumuuPeopleTantraTeetheTentieTestaeTestee
Some six letter words with the fourth letter U are:abductaboundabruptabsurdaccuseacquitactualadjustalludeallureambushamountampuleannualaroundarousearoundarouseassumeassureastuteauburnaugustautumnbeautybelugabemuseblousecasualclausecloudycolumncrouchdebunkdeducedeductdefusedeludedelugedeluxedemuredeputydiluteeffuseendureengulfenoughensureeunuchexcuseexhumefecundfibulafigureflauntfuturegerundgrouchgroundgrouseimmuneimmureimpugnimpureimputeinduceinductinfuseinjureinsultinsurejaguarjejunejujubekabukikahunalegumeliquidliquorlocustluxurymanualmanurematureminuetminutemisusemodulemutualnaturenebulanoduleobtuseoccultoccupyonrushpenuryperuserebuffrebukereducerefugerefundrefuserefutereputeresultresumereturnritualrobustrotundsalutesecureseducesequelsequinsexualshouldshrunksleuthslouchspousesprucesprungstruckstrungsuburbsuturetenurethoughthrushthrusttraumatroughtroupetubuletumultuncurlundulyunfurlunjustunrulyunsungunsureupturnvacuumvicunavisualvolumeyogurt
crates
saddlesettlesallowcheesecattlecuddleladdielassieladderletterbattleballadbatterbannerbetterbuttermattermiddlemellowmutterpatterpaddleputterpillowpelletpalletpuddletallowtellerhappenhollowfellowfollowfallowfillerfitterfatterkettlekittengutter
Some six letter words with second letter U and fourth letter K are:bucketbucklebunkercuckooduckedduckiehunkerhuskedjunkedjunkerjunketluckedlurkedmuckedmusketmuskoxpuckerpunkedquakesruckussuckersulkedsunkentuckedturkey
Skiing
Auntie?
skirts
sexe
Idiots
Levels
Some six letter words with the fourth letter U are:absurdaccuseacquitactualadjustambushamountannualaroundarouseassumeassureastuteaugustautumnbeautyblousecasualclausecolumncrouchdeductdefusedeludedelugedeluxedemuredenudedeputydiluteendureengulfenoughensureexcuseexhumefigurefuturegerundgrouchgroundgrouseimmuneimmureimpureimputeinduceinductinfuseinjureinsultinsurejaguarjejunejujubekabukilegumeliquidliquorlocustluxurymanualmanurematureMedusaminuetminutemisusemodulemutualnaturenebulanoduleobtuseoccultoccupyperuseploughpseudorebuffrebukereducerefuelrefugerefundrefuserefuteresultresumereturnrobustrotundsalutesecureseducesequelsequinsexualshouldstrucksuburb