noun. The quality of being able to adapt; the capacity or tendency to adapt, especially to one's circumstances or environment.

What is adaptiveness?

adaptiveness. noun [ U ] uk/əˈdæp.tɪv.nəs/ us/əˈdæp.tɪv.nəs/ the quality of being able to change to suit different conditions: Flexibility and adaptiveness are important qualities in managers.

Is Adaptive an adjective?

Of, pertaining to, characterized by or showing adaptation; making or made fit or suitable. Capable of being adapted or of adapting; susceptible of or undergoing accordant change.