in vain

US /ɪn veɪn/
UK /ɪn veɪn/
"in vain" picture
1.

without success or a desired result

:
•
All their efforts to save the company were in vain.
•
She tried in vain to open the locked door.
:
fruitlesslyuselesslypointlesslyto no availunsuccessfully
:
vaintake someone's name in vain