part of speech: adjective
definition 1: needed; not able to be put aside.
- My brother does not have the cash necessary to buy a car.
- A strong goalie is a necessary part of a soccer team.
synonyms: essential, indispensable
antonyms: needless, unnecessary
definition 2: expected or needed under given circumstances.
- He made the necessary arrangements for his guests.
synonyms: compulsory, expected, required
antonyms: needless, unnecessary