sidelong - adjective

• (used especially of glances) directed to one side with or as if with doubt or suspicion or envy
• situated at or extending to the side
• inclining or directed to one side

sidelong - adverb

• on the side
• with the side toward someone or something
• to, toward or at one side

sidelong - thesaurus

askance   askant   asquint   lateral   obliquely   sideways   squint   squinty