A facial expression expressing one's criticism, disapproval, animosity, or scorn of varying levels of intensity towards another person. Defined by one person looking at the other out of the corner of their eye(s) with a scowl, as their head is turned in a different direction. Often an invitation for a fight or confrontation of some sort. Synonymous expression: "cuttin' your eyes" (at someone). Popular expression (and common occurrence) among urban American populations.
"Girl, you see that heffa over there givin' me the side eye? She MUST be tryin' to start somethin'."
by B.T. December 6, 2007
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Looking at somebody through your peripheral vision with disapproval
Alison is now side eyeing everyone in the room
by Life of a receptionist April 10, 2018
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To give someone a knowing look. Usually when shocked or surprised by something.
To Side Eye

When Mr Henderson made a sexist comment, his students side-eyed each other in disbelief.
by Havana77 November 17, 2009
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When a girl that is taken or not taken is looking at you and you can see them out of the coner of your eye.
"Hey look Aaron is Side eyeing Colin."
"You have just been side eyed"
"Note to self You have just seen sum1 with the abilty of Side Eyes."
by Cole man March 19, 2007
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Description. When a member of the opposite sex looks from the corner of their at you in a obvious but discrete (obviously-discretely) way whilst in the company of their partner.
*Walk past girl walking down the street with her partner*
Friend 1: Damn that girl is giving you side eye
Friend 2: Yeah, I know what an attention seeking bitch.
Friend 1: Yeah but you would still hit that wouldn't you?
Friend 2: Of course playa. But only so I can jizz in her side eye cheating face. The harlet
Friend 1: Yo... That's deep
Friend 2: Not as deep as that brother finding out his girl is a side eye whore.
by I M May 1, 2006
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Where a Belgian disapproves of an action or thing but doesn’t have the balls to say something to you, just gives a slightly discontentful sideways look.
I just received a Belgian side eye because I’m wearing flip flops in October.
by LdDarkHelmet November 3, 2018
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