Meaning of NECESSARY in English

■ adjective

1》 required to be done, achieved, or present; needed.

2》 inevitable: a ~ consequence.

↘ Philosophy inevitably resulting from the nature of things, so that the contrary is impossible.

↘ Philosophy (of an agent) having no independent volition.

■ noun

1》 ( necessaries ) the basic requirements of life, such as food and warmth.

2》 ( the ~ ) informal the action or item needed.

↘ Brit. informal the money required.


ME: from L. necessarius , from necesse 'be needful'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.