What does the word "Futile" mean?

• The required answer is - Something that has no chance of success or produces no useful result.

• Futile (Adjective)
English Meaning: Achieving no result; not effective or successful.
Bangla Meaning: (১) (কাজ) নিষ্ফল; বৃথা: a futile attempt.

Example Sentence:
1. The plane detoured north in a futile attempt to avoid the bad weather.
2. All the Efforts to convince him were futile.

Source:
1. Cambridge Dictionary.
2. Accessible Dictionary by Bangla Academy.