RhymeHelp.com

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

Matched by real pronunciation, not just spelling.

retention

/R IY0 T EH1 N SH AH0 N/

Perfect rhymes

2 syllables

3 syllables

4 syllables

5 syllables

Near rhymes