Imperturbable and Rumbustious
Opposite meaning words
Imperturbable
Imperturbable adjective - Not easily panicked or upset.
Rumbustious is an antonym for imperturbable.
Nearby Word: imperturbability
Rumbustious
Rumbustious adjective - Being rough or noisy in a high-spirited way.
Usage example: while American university debates tend to be sedate affairs, their counterparts in Oxford are wholeheartedly rumbustious
Imperturbable is an antonym for rumbustious.
Cite this Source
Rumbustious and Imperturbable. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/imperturbable/rumbustious
Imperturbable & Rumbustious. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/imperturbable/rumbustious>.
Rumbustious or Imperturbable. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/imperturbable/rumbustious.
Google Ngram Viewer shows how "imperturbable" and "rumbustious" have occurred on timeline