• The adverb form of 'Miser' is - miserably.
• Miser (noun)
- English Meaning: a person who hoards wealth and spends as little money as possible.
- Bangla Meaning: কৃপণ; অর্থপিশাচ; বখিল; কঞ্জুস।
• Miserably (adverb)
- English Meaning: meanly, poorly; in a wretchedly unhappy manner.
- Bangla Meaning: শোচনীয়ভাবে।
অন্যদিকে,
Miserly (adjective)
- English Meaning: of, relating to, or characteristic of a miser.
- Bangla Meaning: ব্যয়কুণ্ঠ; কৃপণ।
• Misery (noun)
- English Meaning: a state or feeling of great physical or mental distress or discomfort.
- Bangla Meaning: দুঃখযাতনা; দুর্গতি; দুর্দশা; যন্ত্রণা; মর্মপীড়া; মর্মযন্ত্রণা; দুরবস্থা।
• Other forms:
- Miserable (adjective)
- Miserableness (noun)
- miserily → not a standard English word.
Source:
1. Accessible Dictionary by Bangla Academy.
2. Merriam-Webster Dictionary.