英和和英

in spite of oneself

I burst out laughing in spite of myself.

the quality of having an unconcerned air

unfamiliar

an act of disagreeing

an unenlightened state

without someone's knowledge

not made known

to feign on purpose

He is an ill-bred fellow―an unmannerly fellow―a churlish fellow―a churl.

to be {ill-informed} about something

the quality of being ill-advised

profess ignorance

passing time of which one is unaware

in a manner that is unclear

not noticed inadvertently

He is an utter stranger―a complete stranger―a perfect stranger―to me.

a state of dissent

to believe in something blindly

No teetotaller knows.

to be completely unable to understand

not knowing or perceiving

not polite

something that has no basis or foundation

I do not know what to do

I don't know.

That is none of your business―no business of yours.

I don't know why.

a lack of sensibility

the characteristic of lacking common sense