Words That Rhyme With "Slackens" :
2 syllables:
actions, Akens, atoms, bacon's, batten, beacons, beckons, blackens, brackens, chickens, craton, dagen, deacons, dickens, dragons, factions, fagen, falcons, fatten, flacons, fractions, gagen, gascons, gatten, Grattan, gratton, happens, Hawkins, Hawkyns, Jacksons, kokan's, machen, macken, paten, Patons, patten, Patton, ragen, ratton, reckons, saddens, sagen, Saxons, staten, stratas, tappan, thickens, tokens, waggon, wagons, weakens
3 syllables:
abstractions, attractions, awakens, contractions, distractions, exactions, extractions, infractions, Jamaicans, manhattan, mayhappen, Mohicans, moroccans, Mountbatten, Nebraskans, Nevadans, pendragon, reactance, reactions, transactions