leer

nouns

a facial expression of contempt or scorn; the upper lip curls
is derived from
a suggestive or sneering look or grin
is a type of (narrower)
the feelings expressed on a person's face
"a sad expression"; "a look of triumph"; "an angry face"

verbs

look suggestively or obliquely; look or gaze with a sly, immodest, or malign expression
"The men leered at the young women on the beach"
is a type of (narrower)
perceive with attention; direct one's gaze towards
"She looked over the expanse of land"; "Look at your child!"; "Look--a deer in the backyard!"