ostadig bedeutet auf Englisch

unsteady▼(not held in position)
adjective
[UK: ʌn.ˈste.di] [US: ʌn.ˈste.di]I observed that his hands were unsteady. = Jag observerade att hans händer var ostadiga.

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