frowner

intransitive verb

1. to contract the brows, as in displeasure or concentrated thought
2. to look with displeasure or disapproval (on or upon)

transitive verb

1. Now Rare to silence, subdue, etc. with a disapproving look
2. to express (disapproval, disgust, etc.) by frowning

noun

1. a contracting of the brows in sternness, thought, etc.
2. any expression of displeasure or disapproval