Hung up and Unflappable

Hung up

Hung up adjective - Having extreme or relentless concern.

Unflappable is an antonym for hung up.

Unflappable

Unflappable adjective - Not easily panicked or upset.
Usage example: the unflappable teacher never even blinked when the wall map came crashing down

Hung up is an antonym for unflappable.
Cite this Source
Unflappable and Hung up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/hung_up/unflappable
Hung up & Unflappable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/hung_up/unflappable>.
Unflappable or Hung up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/hung_up/unflappable.
Google Ngram Viewer shows how "hung up" and "unflappable" have occurred on timeline