изменчив meaning in English

erratic▼(unsteady, random; prone to unexpected changes; not consistent)
adjective
[UK: ɪ.ˈræ.tɪk] [US: ɪ.ˈræ.tɪk]

variable▼(able to vary)
adjective
[UK: ˈveə.rɪəb.l̩] [US: ˈve.riəb.l̩]

adaptability [adaptabilities]▼(variability in respect to, or under the influence of, external conditions)
noun
[UK: ə.ˌdæp.tə.ˈbɪ.lə.ti] [US: ə.ˌdæp.tə.ˈbɪ.lə.ti]

caprice [caprices]▼(unpredictable or sudden condition, change, or series of changes)
noun
[UK: kə.ˈpriːs] [US: kə.ˈpriːs]

mutability [mutabilities]▼(quality or state of being mutable)
noun
[UK: ˌmjuː.tə.ˈbɪ.lɪ.ti] [US: ˌmjuː.tə.ˈbɪ.lɪ.ti]

variability [variabilities]▼(state)
noun
[UK: ˌveə.rɪə.ˈbɪ.lɪ.ti] [US: ve.riə.ˈbɪ.lə.ti]