at best

US /æt ˈbest/
UK /æt ˈbest/
"at best" picture
1.

paling baik, sekurang-kurangnya

even in the most favorable circumstances; under the best possible conditions

:
The car will get 20 miles per gallon at best.
Kereta itu akan mendapat 20 batu per gelen paling baik.
His chances of winning are slim at best.
Peluangnya untuk menang adalah tipis paling baik.