英和和英

to be necessary

do the necessary

of something, to be needed

according to the need

Is required

by necessity

necessity

to be pressed by necessity

a necessary thing

to meet the need―fill a need―minister to one's needs

have need of

to meet a need―meet a want

to meet a need

an exigency

in case of necessity

the degree of necessity

meet a need

to suit the exigency

It's necessary.

urgently needed

something that is indispensable

to supply the demand―meet the demand

to urge （on one） the necessity of something―impress upon one the importance of something

be due

to cause necessity―necessitate

do the needful

position or line of employment

absolutely necessary

more than is needed

as much as necessary