- The definition of necessary is being essential or required.
An example of necessary is a high school diploma or GED to obtain college admittance.
A high school diploma is necessary for admission to college.
necessary definition by Webster's New World
- 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: Middle English ; from Classical Latin necessarius ; from necesse, unavoidable, necessary ; from ne-, not plush cedere, to give way: see cede
- a necessary thing; thing essential to life, some purpose, etc.: often used in pl.
- Dialectal a privy or toilet
- Law those things essential to maintaining a dependent or incompetent in comfort and well-being
necessary definition by American Heritage Dictionary
- Absolutely essential. See Synonyms at indispensable.
- Needed to achieve a certain result or effect; requisite: the necessary tools.
- a. Unavoidably determined by prior conditions or circumstances; inevitable: the necessary results of overindulgence.b. Logically inevitable.
- Required by obligation, compulsion, or convention: made the necessary apologies.
Origin: Middle English necessarie, from Old French necessaire, from Latin necessārius, from necesse; see ked- in Indo-European roots.