Interrogate rhymes with:
abrogate, congregate, corrugate, desegregate, irrigate, segregate, abrogate, castigate, congregate, corrugate, delegate, desegregate, fumigate, instigate, investigate, irrigate, koreagate, mitigate, navigate, obligate, propagate, relegate, segregate, subjugate
Interrogate sounds like:
indirect, interact, interacted, intercede, interceded, intercity, interest, interested, interject, interjected, interrogated, intersect, intersected, interstate, intourist, intrastate, intrawest, intricate, intrigued