adjective

necessary

necessary

Is it necessary to call him now?

Is it necessary to call him now?

Food and water are necessary for life.

Food and water are necessary for life.

((necessary for sth./sb.)) needed for a purpose or a reason Sleep is necessary for good health.

((necessary to do sth.)) needed in order to achieve something It is necessary to complete the form.

Synonyms: essential, required, vital; Antonyms: unnecessary, optional

From Latin 'necessarius' ('unavoidable'), from 'necesse' ('unavoidable, necessary').

Think of 'need'. If you 'need' something, it is 'necessary'.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.