adjective
- that cannot be dispensed with; essential; indispensable: the nutriments necessary to life
- resulting from necessity; inevitable: a necessary result
- that must be done; mandatory; not voluntary
- not free to choose; compelled by circumstances: a necessary agent
- inherent in the situation; undeniable; unavoidable from the premises
- Archaic rendering some essential and intimate service
Origin:
ME < L necessarius < necesse, unavoidable, necessary < ne-, not + cedere, to give way: see cede