to no effect
US /tə nō ɪˈfekt/
UK /tə nō ɪˈfekt/
1.
sans effet, en vain
without producing the desired or intended result
:
•
They tried to persuade him, but to no effect.
Ils ont essayé de le persuader, mais sans effet.
•
All her efforts were to no effect.
Tous ses efforts ont été sans effet.