vital

Definitions

Absolutely necessary or important; essential.

Full of energy; lively.

Relating to or manifesting life.

Examples

Regular exercise is vital for maintaining good health.

It is vital that we arrive at the airport on time for our flight.

Communication plays a vital role in the success of any relationship.

Synonyms

essential crucial critical pivotal indispensable imperative fundamental

Antonyms

trivial unimportant inessential insignificant minor optional superfluous