Het up and Unflappable

Het up

Het up adjective - Feeling or showing uncomfortable feelings of uncertainty.

Unflappable is an antonym for het up.

Unflappable

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

Het up is an antonym for unflappable.
Cite this Source
Unflappable and Het up. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/het_up/unflappable
Het up & Unflappable. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/het_up/unflappable>.
Unflappable or Het up. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/het_up/unflappable.
Google Ngram Viewer shows how "het up" and "unflappable" have occurred on timeline