imperativeness definitions

WordNet (r) 3.0 (2005)

n
1: the state of demanding notice or attention; "the insistence of their hunger"; "the press of business matters" [syn: imperativeness, insistence, insistency, press, pressure]
2: the quality of being insistent; "he pressed his demand with considerable instancy" [syn: imperativeness, instancy]

Merriam Webster's

noun see imperative I