Weak Constitution
Poor health; prone to catching colds or illnesses, or having to stay home in bed. Not physically strong or robust.
The winters were tough on his already weak constitution, putting him even further out of touch with his more athletic cousins.
Weak constitution
Someone with no back bone.
Wow, he lets them talk to him any kind of way. He never stands up for himself! He has a weak constitution.
weak constitution
A person lacking morales
She has a weak constitution.