ex ‧ cul ‧ pate /ˈekskʌlpeɪt/ BrE AmE verb [transitive]
[ Date: 1600-1700 ; Language: Medieval Latin ; Origin: past participle of exculpare , from Latin culpa 'blame' ]
formal to prove that someone is not guilty of something
—exculpation /ˌekskʌlˈpeɪʃ ə n/ noun [uncountable]