necessity

Definitions

The fact of being required or indispensable.

An indispensable thing; a requirement.

The state or quality of being necessary.

Examples

Water is an absolute necessity for human survival.

The necessity of a good education cannot be overstated in today's competitive job market.

We only bought the items that were a strict necessity for our camping trip.

Synonyms

requirement essential prerequisite must need compulsion indispensability

Antonyms

luxury option choice superfluity inessential nonessential excess