(n) the trait of being unwilling, Syn. involuntariness, Ant. willingness, Example:his unwillingness to cooperate vetoed every proposal I made; in spite of our warnings he plowed ahead with the involuntariness of an automaton
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
n. The quality or state of being voluntary; spontaneousness; specifically, the quality or state of being free in the exercise of one's will. [ 1913 Webster ]