in ‧ ter ‧ ro ‧ gate /ɪnˈterəɡeɪt/ BrE AmE verb [transitive]
[ Date: 1400-1500 ; Language: Latin ; Origin: past participle of interrogare , from rogare 'to ask' ]
to ask someone a lot of questions for a long time in order to get information, sometimes using threats SYN question :
The police interrogated the suspect for several hours.
—interrogator noun [countable] :
He refused to tell his interrogators anything.
—interrogation /ɪnˌterəˈɡeɪʃ ə n/ noun [uncountable and countable]