Terrifying rhymes with:
clarifying, verifying, clarifying, electrifying, glorifying, horrifying, purifying, verifying, amplifying, certifying, clarifying, classifying, codifying, disqualifying, diversifying, edifying, electrifying, exemplifying, falsifying, glorifying, gratifying, horrifying, identifying, intensifying, justifying, magnifying, misidentifying, modifying, mummifying, mystifying, notifying, nullifying, personifying, purifying, qualifying, ratifying, rectifying, signifying, simplifying, solidifying, specifying, speechifying, stultifying, testifying, unifying, verifying
Terrifying sounds like:
terpening, thriving, throbbing, trapping, trappings, travnik, tribune's, tripping, trooping, trupin's, turbans, turbines