culpable /ˈkʌlpəbl/ /ˈkʌlpəbl/
guilty /ˈgɪl.ti/ /ˈgɪlti/
accountable /əˈkaʊntəbl/ /əˈkaʊntəbl/
guilty person
culprit /ˈkʌlprɪt/ /ˈkʌlprɪt/