godan verb (-ru), intransitive verb
become greasy; get oily
Describes skin, hair, or surfaces becoming shiny or slick with oil or grease. Often used for an unpleasantly oily appearance.
夏になると顔が脂ぎってくる。
My face gets greasy in the summer.
脂ぎった髪を洗った。
I washed my greasy hair.
godan verb (-ru), intransitive verb
be loud and garish; flashy
Rare figurative use describing a person's appearance or manner as overly showy or vulgar, as if coated in grease. Often used for middle-aged men trying to look flashy.
あの脂ぎった中年男性は派手なスーツを着ている。
That flashy middle-aged man is wearing a loud suit.