Community definitions
To absolutely dominate and look amazing while doing it. When someone is killing it in life, fashion, or anything else.
“She walked into the party and immediately slayed everyone with that fit.”
Originally from drag culture - to perform or present yourself so well that you metaphorically "slay" the competition.
“Beyoncé slays every performance, no debate.”
To succeed impressively or to look incredibly good. Can be used as encouragement.
“Go slay that interview bestie!”