Tra từ frown - Từ điển Oxford Advanced Learner 8th

frown [frown frowns frowned frowning] verb, noun BrE [fraʊn] NAmE [fraʊn]
verb intransitive, transitive
to make a serious, angry or worried expression by bringing your ↑eyebrows closer together so that lines appear on your ↑forehead
•~ (at sb/sth) What are you frowning at me for?
•She frowned with concentration.
•+ speech ‘I don't understand,’ she frowned.
Verb forms:

Word Origin:
late Middle English: from Old French froignier, from froigne ‘surly look’, of Celtic origin.

Thesaurus:
frown verb I, T
•Why are you frowning at me?
grimace • |disapproving scowl •
Opp: smile
frown/grimace/scowl at sb/sth
frown/grimace in concentration, anxiety, etc
frown/scowl darkly/heavily

Example Bank:
•He frowned with annoyance.
•He looked at the coded message, frowning in concentration.
•She studied the letter, frowning thoughtfully.
•She turned and frowned at him.
•‘I see,’ he frowned.
•By then the customer was frowning impatiently.
•She frowned in concentration as she read the catalogue.
•Why are you frowning at me like that?
Derived: ↑frown on somebody

noun usually singular
a serious, angry or worried expression on a person's face that causes lines on their ↑forehead
•A small frown creased her forehead.
•She looked up with a puzzled frown on her face.
•a slight frown of disapproval/concentration, etc.

Word Origin:
late Middle English: from Old French froignier, from froigne ‘surly look’, of Celtic origin.

Example Bank:
•A frown marred his handsome features.
•A frown of concern creased her forehead.
•He looked at her with a puzzled frown in his eyes.
•Her face creased into a frown.
•Her frown grew deeper at the memory.
•His brows drew together in a frown.
•She wore a worried frown.
•The boy gave a small frown.
•a frown of concentration/disapproval/puzzlement