RhymeHelp.com

an online rhyming dictionary  /raɪm//ˈhɛlp/(/R AY1 M//HH EH1 L P/)

Matched by real pronunciation, not just spelling.

superhighway

/S UW2 P ER0 HH AY1 W EY2/

Perfect rhymes

2 syllables

Near rhymes