- Bengali Word বৃথাEnglish definition(adjective) futile; useless; vain; fruitless; abortive; ineffectual. (adverb) in vain; vainly; uselessly; fruitlessly; to no purpose. বৃথাকথা (noun) idle talk; nonsense. বৃথাকর্ম (noun) useless action. বৃথাশ্রম (noun) vain exertion; useless labour.