Synonyms for necessity

noun

1. The state of being required

   need, compulsion, constraint, pressure, obligation, needfulness, essentiality, indispensability, undeniability, requisiteness, prerequisiteness; see also need 3, requirement 2.

2. That which is needed

   need, want, requisite, vital part, essential, demand, imperative, fundamental, claim, exaction, desideratum, must*; see also lack 2, need 3, requirement 2.

3. The state of being forced by circumstances

   exigency, pinch, stress, urgency, extremity, destitution, privation, obligation, inexorableness, inescapableness, case of life or death; see also emergency, poverty 1, 2. See syn. study at need.

of necessity