frown
Concise Oxford English Dictionary © 2008 Oxford University Press:
frown/fraʊn/
▶verb furrow one's brows in an expression indicating disapproval, displeasure, or concentration.
■ (frown on/upon) disapprove of.
▶noun an expression of this type.– derivatives
frowning adjective,
frowningly adverb.
frowning adjective,
frowningly adverb.
– origin ME: from OFr. froignier, from froigne ‘surly look’, of Celtic origin.
'frown' also found in these Oxford entries:

