Entry 1 sense Webster, 1913 Interrogator /ĭnˌ-tĕr'-əg-ātˌ-ẽr/ · In·ter·ro·ga·tor · IPA /ˌɪntˈɛrəɡˌeɪtər/ 01 n. One who asks questions; a questioner. 1. One who asks questions; a questioner.