Antonyms of noun willingness

1 sense of willingness

Sense 1
willingness -- (cheerful compliance; "he expressed his willingness to help")
       Antonym of unwillingness (Sense 1)
      => unwillingness, involuntariness -- (the trait of being unwilling; "his unwillingness to cooperate vetoed every proposal I made"; "in spite of our warnings he plowed ahead with the involuntariness of an automaton")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun willingness

1 sense of willingness

Sense 1
willingness -- (cheerful compliance; "he expressed his willingness to help")
       => disposition, temperament -- (your usual mood; "he has a happy disposition")