Cool
Halcyon
Halcyon adjective - Free from storms or physical disturbance.
Both words in one sentence
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Tesla: Here's to those halcyon days of bloodlust now gone... plus you gotta admit, vampires are just plain cool.
Source: Series / Sanctuary -
Cool Airship: Merchant ships, caravels and warships float throughout Halcyon and other parts of the Empire.
Source: Literature / The Thran -
Mega Corp.: David Xanatos and Halcyon Renard both run them, which gives them access to plenty of cool technology.
Source: Western Animation / Gargoyles
Cite this Source
Halcyon and Cool. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/cool/halcyon
Cool & Halcyon. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/cool/halcyon>.
Halcyon or Cool. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/cool/halcyon.
Google Ngram Viewer shows how "cool" and "halcyon" have occurred on timeline