Get under one's skin

American Slang

Definition

To affect someone deeply in a persistent way—often by irritating, bothering, or preoccupying them.

Examples

"That coworker’s smug laugh really gets under my skin; I keep replaying it long after the meeting ends."

"Don’t let those comments on social media get under your skin; they’re just trying to bait you."

"Ever since he criticized her presentation, the remark has been getting under her skin so much that she can’t focus."