/ ˈwiːkən; NAmE / verb
1.
to make sb/sth less strong or powerful; to become less strong or powerful :
[ vn ]
The team has been weakened by injury.
The new evidence weakens the case against her.
[ v ]
His authority is steadily weakening.
OPP strengthen
2.
to make sb less physically strong; to become less physically strong :
[ vn ]
The explosion had weakened the building's foundations.
[ v ]
She felt her legs weaken.
3.
to become or make sb become less determined or certain about sth :
[ vn ]
Nothing could weaken his resolve to continue.
[ v ]
You must not agree to do it. Don't weaken.