Hectic rhymes with:
apoplectic, dialectic, eclectic, pectic, antarctic, anticlimactic, apoplectic, arctic, chiropractic, climactic, dialectic, didactic, eclectic, extragalactic, galactic, lactic, pectic, prophylactic, tactic
Hectic sounds like:
hajduk, hasidic, haystack, haystacks, hecht's, hegedus, heights, hesitates, hightech, hoechst's, hoists, host's, hostage, hostages, hostages', hostess, hostesses, hosts, houseguests, huestis, hyakutake