The word "unfruitful" implies a lack of productivity or success, but there are many antonyms that convey the opposite meaning. Here are some examples:
1. Productive: defines something that yields results or achieves positive outcomes.
2. Lucrative: refers to something that is profitable or financially rewarding.
3. Successful: characterized by achievements, accomplishments, or positive outcomes.
4. Fertile: describes something that is rich and productive or can support life.
5. Flourishing: describes a state of growth, success, and prosperity, both financially and personally.
Using these antonyms for "unfruitful" in your writing or conversation can help you convey positive and uplifting messages while avoiding negative connotations.