inflatable /ɪnˈfleɪtəbəl/noun 2adjective 1forms 3 noun2 •A boat or dinghy that may be inflated when needed. •Any other structure, artwork etc. that is inflated. adjective1 •Able to be inflated or blown up.An ultra-marathoner’s attempt to “run” from Florida to Bermuda in an inflatable bubble was cut short when the Coast Guard towed him back to land – for the second time. — 2016 formsinflatables · more inflatable · most inflatable