RichThesaurus
insubmergible
vs
submergible
insubmergible
adj
Not capable of being submerged; buoyant.
submergible
noun
Synonym of submersible
adj
Synonym of submersible
How often have the words
insubmergible
and
submergible
occurred in a corpus of books?
(source:
Google Ngram Viewer
)