He braced his back against the wall.
She leaned against him
I can still feel his body pressed against mine.
Ants store up food against the winter.
The directors will take steps to insure against possible failure.
They've been developing protocols to defend against these type of cyber attacks.
a reaction against the achievements of science,as typified by the development of nuclear weapons.
I am against hunting in any form.
They contested against unreasonable regulations.