まじめくさったふりをしての英語

with mock seriousness

He has a crest-fallen air.

He has an unaffected manner.

feel a right berk

to be dubious about a mysterious phenomenon, speech, or behaviour

He has a sinister face―a sinister cast of countenance.

the appearance of being highly affected

He has a genial manner.

wear a delighted expression

of a person, the state of looking impatient at something

in a quick way

to have an attitude similar to that of an adult

the quality of looking reserved

He has a crest-fallen air.

He has a significant countenance.

have a bored expression

He has a vulgar air―a low-bred manner.

the condition of appearing exaggerated

to consider something to be unbearable

to be weak

the degree of the appearance of being highly affected

He has an awkward figure―a clumsy figure.

the state or quality of looking really malicious

It is a clever imitation.

in an inquiring manner

being frantic

Nor blame thy fellow-men;

of a person, to appear very intelligent

the action of pretending to be in love

have a comic look on one's face