Smothering rhymes with:
mothering, mothering, wuthering, bothering, dithering, fathering, feathering, furthering, gathering, grandfathering, mothering, slathering, slithering, weathering, withering, wuthering
Smothering sounds like:
santorum's, schneiderman's, semidrying, smattering, smithereens, squandering, syndromes