Defunct rhymes with:
debunked, dunked, flunked, junked, plunked, spelunked, adjunct, banked, bengt, blanked, blinked, cranked, debunked, distinct, dunked, extinct, flanked, flunked, franked, hoodwinked, indistinct, instinct, interlinked, junked, linked, outflanked, plunked, precinct, ranked, sacrosanct, spanked, spelunked, succinct, tanked, thanked, winked, yanked