Lukewarm rhymes with:
schwarm, swarm, warm, conform, deform, disinform, dorm, form, inform, misinform, norm, orme, perform, reform, schwarm, storm, swarm, torme, transform, warm
Lukewarm sounds like:
lagrone, lazzarini, leckrone, lecrone, leghorn, legroom, liljegren, lockerman, lockrem, logogram, loughran, lucerne, lugworm