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[nes-uh-ser-ee] /ˈnɛs əˌsɛr i/

being essential, indispensable, or requisite:
a necessary part of the motor.
happening or existing by necessity:
a necessary change in our plans.
acting or proceeding from compulsion or necessity; not free; involuntary:
a necessary agent.

noun, plural necessaries.
something necessary or required for a particular purpose; .
necessaries, Law. food, clothing, etc., required by a dependent or incompetent and varying with his or her social or economic position or that of the person upon whom he or she is dependent.
Chiefly New England. a privy or toilet.
needed to achieve a certain desired effect or result; required
resulting from necessity; inevitable: the necessary consequences of your action

(philosophy) (in a nonlogical sense) expressing a law of nature, so that if it is in this sense necessary that all As are B, even although it is not contradictory to conceive of an A which is not B, we are licensed to infer that if something were an A it would have to be B
(rare) compelled, as by necessity or law; not free
(informal) the necessary, the money required for a particular purpose
(informal) do the necessary, to do something that is necessary in a particular situation

late 14c. “needed, required, essential, indispensable,” from Old French necessaire “necessary, urgent, compelling” (13c.), and directly from Latin necessarius “unavoidable, indispensable, necessary,” from necesse “unavoidable, indispensable,” originally “no backing away,” from ne- “not” + cedere “to withdraw, go away, yield” (see cede). The root sense is of that from which there is no evasion, that which is inevitable. Necessary house “privy” is from c.1600. Necessary evil is from 1540s (the original reference was to “woman”).

mid-14c., “needed, required, or useful things; the necessities of life; actions determined by right or law,” perhaps from Old French necessaire (n.) “private parts, genitalia; lavatory,” and directly from Latin necessarius (n.), in classical Latin “a relation, relative, kinsman; friend, client, patron;” see necessary (adj.).


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  • Necessitarian

    [nuh-ses-i-tair-ee-uh n] /nəˌsɛs ɪˈtɛər i ən/ noun 1. a person who advocates or supports (distinguished from ). adjective 2. pertaining to necessitarians or . n. 1754, from necessity + -arian. As an adjective from 1739. Related: Necessitarianism.

  • Necessitarianism

    [nuh-ses-i-tair-ee-uh-niz-uh m] /nəˌsɛs ɪˈtɛər i əˌnɪz əm/ noun 1. the doctrine that all events, including acts of the will, are determined by antecedent causes; determinism. /nɪˌsɛsɪˈtɛərɪəˌnɪzəm/ noun 1. (philosophy) another word for determinism Compare libertarian

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