By surface analysis, হয় (hoẏ) + -তো (-tō).
হয়তো • (hôẏto)
- perhaps, possibly, maybe
- Subhasha Bhattacarya, Sailendra Biswas, Sailendra Biswas, and Jnanendramohana Dasa (2022) “haẏato”, in Digital Dictionaries of South Asia [Combined Bengali Dictionaries]
- Accessible Dictionary, হয়তো, Bengali-English Dictionary, Government of Bangladesh