Perfect rhymes:
* beckle (not a common word)
* heckle (to interrupt with questions or challenges)
* reckle (not a common word)
* wreckle (not a common word)
Near rhymes (slant rhymes):
* pickle
* sickle
* nickel
* twinkle
Eye rhymes:
* buckle
* truckle
The best rhyme for you will depend on the context and the tone of your writing.