necessity or obligation created by some situation: no need to worry
a lack of something useful, required, or desired: to have need of a rest
something useful, required, or desired that is lacking; want; requirement: list your daily needs
a condition in which there is a deficiency of something, or one requiring relief or supply: a friend in need
a condition of poverty, or extreme want
transitive verb
to have need of; want or lack; require: need is often used as an auxiliary, either uninflected and followed by an infinitive without to, or inflected and followed by an infinitive with to, meaning “to be obliged, must”: he need not come, he needs to be careful
intransitive verb
Archaic to be necessary; chiefly in impersonal constructions: it needs not