To snool means to behave in a servile or submissive way, especially to someone in authority.
Snooling is not a good thing. It means acting weak and afraid.
Examples:
He would snool to the king.
She didn't want to snool to her boss.
The dog would snool to its owner.
I won't snool to anyone!
He would snool so much, he never got what he wanted.
She snooled and sniveled until she got her way.