The superlative form of 'snubby', which means showing disapproval or contempt by being short or curt.
Being snubby can make people feel bad or unimportant.
Examples:
She gave me the snubbiest look when I asked for help.
That was the snubbiest response I've ever heard.
He has the snubbiest attitude towards new ideas.
The cat gave me the snubbiest look when I tried to pet it.
It was the snubbiest behavior I've ever seen in my whole life.
She always has the snubbiest tone when she talks to me.