frown

frown 1

•  verb [I]

to make an angry or unhappy expression by moving your EYEBROWs together, so that lines appear on your FOREHEAD:
?Mel frowned and pretended to ignore me.
frown on/upon sth phrasal verb [T]
to disapprove of something:
?In the 1930s divorce was frowned upon.

frown 2

• noun [C]

the expression on your face when you frown:
?He looked at her with a puzzled frown.