frown frown /ˈfraʊn/

noun

1. A facial expression of dislike or displeasure  ( frown , scowl )
   a facial expression of dislike or displeasure
   

verb

1. () Look angry or sullen, wrinkle one's forehead, as if to signal disapproval  ( glower , lour , lower , frown )
   look angry or sullen, wrinkle one's forehead, as if to signal disapproval
    I could see my boss's frown when I told him about my mistake
   I could see my boss's frown when I told him about my mistake