The antonym of the word "Prolific" is -

• Prolific (Adjective).
- English meaning: Producing many works, (Of an artist, a writer, etc.) and producing a lot of fruit, flowers, etc. (Of plants, animals).
- Bangla meaning: প্রচুর পরিমাণে উৎপাদনশীল; অতিপ্রজ।

• Synonym: Fertile, Productive, Rich, Creative.
• Antonym: Unproductive, Dead, Sterile, Barren.

• উল্লিখিত অপশনগুলো,
- Abundant - প্রচুর; অধিক;
- Pugnacious- ঝগড়াটে;
- Barren - অনুর্বর; বন্ধ্যা; নিষ্ফল;
- Sophistic - সূক্ষ কিন্তু ভ্রান্তিপূর্ণ;

• Example sentence:
- Rabindranath Tagore was a prolific writer and poet.
- The mango tree in our garden is very prolific.

Source: Merriam & Webster Dictionary, Oxford Dictionary, Accessible Dictionary.