fruitless
Definitions
Failing to achieve the desired results; unproductive or useless.
Not producing any fruit or offspring.
Examples
After hours of fruitless searching, we finally decided to give up on finding the lost keys.
The negotiations proved to be fruitless as neither side was willing to compromise on their demands.
He made a fruitless attempt to fix the broken engine without the proper tools.
Synonyms
futile vain unproductive useless ineffectual pointless unsuccessful
Antonyms
fruitful productive successful effective profitable useful advantageous