IPA: /əˈdæptɪvnəs/
KK: /əˈdæptɪvnəs/
The quality or ability to change and adjust to new conditions or situations.
The adaptiveness of the species allowed it to thrive in changing environments.
Adaptiveness → It is formed from "adapt" (from Latin "adaptare", meaning to adjust or fit) and "-ness" (a suffix indicating a state or quality). The word "adaptiveness" refers to the quality or state of being able to adjust or fit to new conditions.
Think of the word 'adapt' which means to adjust, and remember that 'adaptiveness' is the quality of being able to adjust to different situations.