英和和英

something that should not be done

unnecessary

position or line of employment

Don't do it

the state of being unnecessary

something you have to do

the state of being unreliable

I'm afraid you don't have an option.

anything that is not essential

a case in which something should be done

a thing which must be done

Don't be frivolous!

something or some situation that is unexpected

not certain; doubtful

uncertainty

something that is vitally necessary

an unexpected thing

I won't do such a thing.

I don't want to.

something that is to be done by someone

They're not here.

to say nay―deny―refuse

the matter which must be addressed

a state of being out of bounds

something that causes harm to something else

the condition of being wicked

I'm positive.

the condition of being untidy

not absolutely necessary

an integral part