Tra từ mask - Từ điển Oxford Advanced Learner 8th

mask [mask masks masked masking] noun, verb BrE [mɑːsk] NAmE [mæsk]
noun

1. a covering for part or all of the face, worn to hide or protect it
•a gas/surgical mask
•The robbers wore stocking masks.
see also ↑oxygen mask
2. something that covers your face and has another face painted on it
•The kids were all wearing animal masks.
see also ↑death mask
3. a thick cream made of various substances that you put on your face and neck in order to improve the quality of your skin
•a face mask
4. usually singular a manner or an expression that hides your true character or feelings
•He longed to throw off the mask of respectability.
•Her face was a cold blank mask.

Word Origin:
mid 16th cent.: from French masque, from Italian maschera, mascara, probably from medieval Latin masca ‘witch, spectre’, but influenced by Arabic mask̲ara ‘buffoon’.

Example Bank:
•For a moment her mask slipped, and I saw how scared she really was.
•He was hiding behind a mask of indifference but she wasn't fooled.
•Her face was a blank mask as she answered my question.
•His fooling around is a mask for his lack of confidence.
•In the second part of the play, the actors take off their masks.
•She wore a mask over her face.
•The man's face was hidden by a mask.
•Two eyes glared at him from beneath the mask.
•two men in black masks
•Behind the mask of indifference she was grinning.
•He looked at me, his face a mask of innocence.
•The mask of politeness slipped for a moment.

verb ~ sth
to hide a feeling, smell, fact, etc. so that it cannot be easily seen or noticed
Syn: ↑disguise, Syn: ↑veil
•She masked her anger with a smile.
Verb forms:

Word Origin:
mid 16th cent.: from French masque, from Italian maschera, mascara, probably from medieval Latin masca ‘witch, spectre’, but influenced by Arabic mask̲ara ‘buffoon’.

Synonyms:
hide
conceal • cover • disguise • mask • camouflage
These words all mean to put or keep sb/sth in a place where they/it cannot be seen or found, or to keep the truth or your feelings secret.
hide • to put or keep sb/sth in a place where they/it cannot be seen or found; to keep sth secret, especially your feelings: ▪ He hid the letter in a drawer. ◇ ▪ She managed to hide her disappointment.
conceal • (formal) to hide sb/sth; to keep sth secret: ▪ The paintings were concealed beneath a thick layer of plaster. ◇ ▪ Tim could barely conceal his disappointment.
When it is being used to talk about emotions, conceal is often used in negative statements.
cover • to place sth over or in front of sth in order to hide it: ▪ She covered her face with her hands.
disguise • to hide or change the nature of sth, so that it cannot be recognized: ▪ He tried to disguise his accent.
mask • to hide a feeling, smell, fact, etc. so that it cannot be easily seen or noticed: ▪ She masked her anger with a smile.
camouflage • to hide sb/sth by making them/it look like the things around, or like sth else: ▪ The soldiers camouflaged themselves with leaves and twigs.
to hide/conceal/disguise/mask/camouflage sth behind sth
to hide/conceal sth under sth
to hide/conceal sth from sb
to hide/conceal/disguise/mask the truth/the fact that…
to hide/conceal/disguise/mask your feelings

Example Bank:
•Varnish tends to mask the natural grain of the wood.
•Wood stains provide good protection but tend to mask the natural grain of the wood.
•Spices were used to mask the unpleasant taste of the meat.