Words That Rhyme With "Happens" :
2 syllables:
aspens, atoms, batten, blackens, brackens, captains, captions, chaplains, chapman's, cheapens, craton, deepens, dragons, fatten, flacons, flaten, flatten, gatten, graben, Grattan, gratton, lapins, lappen, latten, lippens, machen, macken, opens, paten, Patons, patten, Patton, platan, platen, platten, rabban, ratton, saddens, Saipan's, slackens, staten, stratas, tappan, wagons, weapons, yaupons
3 syllables:
contraptions, Mountbatten, Nevadans, reopens