sidelong
side-long
adverb
In a direction to the side; not directly forward.
"He looked sidelong at the stranger."
adjective
Directed to the side, not straight ahead, often implying indirectness or suspicion.
"She gave him a sidelong glance."
Thesaurus
Synonyms: inclined, lateral, side, sideways, obliquely, askant, indirect, squint, squinty, squint-eyed, askance, asquint