The term "changeabilities" refers to the degree to which something is capable of being altered or transformed. However, when considering antonyms for this word, we can look at words that describe inflexibility or immutability. These include terms such as stability, permanence, rigidity, and steadfastness. Whereas "changeabilities" implies a certain amount of fluidity or adaptiveness, its antonyms suggest a sense of consistency or invariability. It is worth noting, however, that while these antonyms provide a useful contrast to the original term, they do not adequately capture the complexity and nuance involved in the processes of change, growth, and development.