Final answer:
A word that rhymes with 'grain' is 'pain'.
Step-by-step explanation:
A word that rhymes with 'grain' is 'pain'. In this case, both words have the same 'ain' sound at the end, making them rhyme. Here are a few more examples:
- Twine - 'ine' rhymes with 'ain'
- Brims - 'ims' rhymes with 'ain'
- Disc - 'isc' rhymes with 'ain'