adjective
- required to be done, achieved, or present; needed
- determined, existing, or happening by natural laws; inevitable
Usage: formal
noun
- the basic requirements of life, such as food, warmth, or shelter
Usage: usually plural
Examples
- It is necessary to wear a helmet when riding a bike.
- Sleep is necessary for good health.
- The necessary documents must be submitted by Friday.
- Is it really necessary to arrive so early?
- The charity provides the necessaries of life to homeless families.
- We packed only the bare necessaries for our camping trip.
- Hard work is a necessary condition for success.