Necessary

Part of speech: noun (n.)

1. A thing that is necessary or indispensable to some purpose; something that one can not do without; a requisite; an essential; -- used chiefly in the plural; as, the necessaries of life.

2. A privy; a water-closet.

3. Such things, in respect to infants, lunatics, and married women, as are requisite for support suitable to station.

Part of speech: adjective (a.)

1. Such as must be; impossible to be otherwise; not to be avoided; inevitable. Death, a necessary end, Will come when it will come. Shak.

2. Impossible to be otherwise, or to be dispensed with, without preventing the attainment of a desired result; indispensable; requiste; essential. "'T is necessary he should die." Shak. A certain kind of temper is necessary to the pleasure and quiet of our minds. Tillotson.

3. Acting from necessity or compulsion; involuntary; -- opposed to free; as, whether man is a necessary or a free agent is a question much discussed.