英和和英

to be necessary

of something, to be needed

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

the degree of necessity

have need of

according to the need

something desired as a necessity

to cause necessity―necessitate

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

more than is needed

of something or someone, to be an absolutely necessary part of something

something that is indispensable

to be self-sufficient

express the need or desire for

immediate needs

It's necessary.

be appropriate or necessary

You will be required to do so.

when the need arises

urgently needed

to feel a need―feel a want

of something, the condition of being either necessary or unnecessary

to be provided with necessities

action having to do with progress of action or matter (do more than is necessary)

It is necessary.

appetitive needs

to gather the necessary things

a necessary thing

to provide the necessities

a thing which must be done