Antonyms of adj shakable

1 sense of shakable

Sense 1
shakable, shakeable -- (capable of being weakened; "the crisis proved his confidence was shakable")

INDIRECT (VIA contestable) -> incontestable, incontestible -- (incapable of being contested or disputed)

Similarity of adj shakable

1 sense of shakable

Sense 1
shakable, shakeable -- (capable of being weakened; "the crisis proved his confidence was shakable")
       => contestable (vs. incontestable) -- (capable of being contested)