英和和英

to be necessary

do the necessary

of something, to be needed

a necessary thing

necessity

have need of

the degree of necessity

by necessity

according to the need

to be pressed by necessity

do the needful

Is required

absolutely necessary

as much as necessary

absolutely essential

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

in great necessity

It's necessary.

something that is indispensable

to cause necessity―necessitate

not necessary

to be sufficient

to meet a need

position or line of employment

necessary business

more than is needed

the degree of indispensability

when the need arises

in any way necessary

urgently needed