Definitions for "Stupefy"
To make stupid; to make dull; to blunt the faculty of perception or understanding in; to deprive of sensibility; to make torpid.
To deprive of material mobility.
make dull or stupid or muddle with drunkenness or infatuation
be a mystery or bewildering to; "This beats me!"; "Got me--I don't know the answer!"; "a vexing problem"; "This question really stuck me"
This spell should freeze an object in place, but when Umbridge tries to use it on an escapee firework, it explodes instead.