Happiness rhymes with:
sleepiness, sloppiness, wimpiness, airworthiness, arbitrariness, bagginess, bitchiness, bounciness, clumsiness, cockiness, contrariness, coziness, craziness, creditworthiness, deadliness, dizziness, dreariness, drowsiness, edginess, emptiness, funniness, ghastliness, hairiness, healthiness, holiness, laziness, liveliness, loneliness, lousiness, nastiness, niggardliness, nosiness, orderliness, pettiness, queasiness, raciness, readiness, riskiness, roominess, rowdiness, scantiness, sexiness, shakiness, silliness, sleepiness, sloppiness, slovenliness, sturdiness, tardiness, tastiness, timeliness, trustworthiness, ugliness, uneasiness, unwieldiness, weariness, wimpiness, worldliness
Happiness sounds like:
haifong, happening, happenings, happens, havana's, havens, having, havins, heaping, heaven's, heavens, heaving, hibbing, hipbones, hobbing, hobbins, hoffman's, hoping, hopping, hovanec, hovhaness, hoving, huffines, huffing, hyping, hypnosis, hyponex