Words That Rhyme With "Happen" :
2 syllables:
aspen, atom, bacchant, batten, blacken, bracken, campen, capcom, capen, captain, caption, chaplain, chapman, Chatham, cheapen, clapman, copen, craton, dagen, dampen, deepen, dragon, fagen, fatten, flacon, flagon, flaten, flatten, gagen, gatten, gladden, graben, Grattan, gratton, lagan, lagen, laggen, lampman, lapin, lappen, latten, lippen, machen, macken, madden, open, papen, paten, patent, Paton, patten, Patton, Pepin, peppin, platan, platen, platten, rabban, ragen, rapine, ratton, ripen, rippon, sadden, sagen, Saipan, shippen, slacken, staten, steepen, stratum, tappan, waggon, wagon, weapon, yaupon
3 syllables:
adaption, Chaliapin, combatant, contraption, mayhappen, Mcfadden, mercaptan, misshapen, Mountbatten, Nevadan, pendragon, recaption, reopen, unshapen