{v.}, {slang} To treat others as inferior; look down on. * /After she had married a rich man, Mary high-hatted her former friends./ * /"Don't high-hat me," Fred warned, when Harry began to walk away as if he didn't know him./ Compare: BRUSH OFF.
HIGH-HAT
Meaning of HIGH-HAT in English
Dictionary of English idioms . Словарь английских идиом. 2012