Antonyms of adj astatic

1 sense of astatic

Sense 1
astatic -- (not static or stable)

INDIRECT (VIA changeable) -> unchangeable -- (not changeable or subject to change; "a fixed and unchangeable part of the germ plasm"-Ashley Montagu; "the unchangeable seasons"; "one of the unchangeable facts of life")

Similarity of adj astatic

1 sense of astatic

Sense 1
astatic -- (not static or stable)
       => changeable (vs. unchangeable), changeful -- (such that alteration is possible; having a marked tendency to change; "changeable behavior"; "changeable moods"; "changeable prices")