Unpleasant looks can be expressed in a variety of ways, such as LEERS and sneers. A leer is a type of facial expression that conveys a feeling of disdain or mockery, often with a sideways glance. A sneer is a facial expression that conveys contempt or scorn, usually with a curled lip. Both expressions are considered to be forms of nonverbal communication that can be used to express disapproval or disdain.