hellacious
adjective
hel·la·cious
ˌhe-ˈlā-shəs 
1
: exceptionally powerful or violent
hellacious winds
2
: remarkably good
has a hellacious curve ball
3
: extremely difficult
a hellacious climb
4
: extraordinarily large
a hellacious traffic jam
hellaciously
adverb
Examples of hellacious in a Sentence
Traffic is hellacious this time of day.
the hellacious heat was more than we could bear
Recent Examples on the Web
But the tour was a hellacious time for Bachman.
—
Andy Greene, Rolling Stone, 28 Feb. 2026
Edmonton superstar Connor McDavid dished out three assists and a hellacious hit on Czechia forward Lukas Sedlec on his first shift early in the first period that set the tone for a fast paced, hard hitting and unselfish display of often breathtaking hockey.
—Scott M. Reid, Oc Register, 13 Feb. 2026
Even against a hellacious Houston defense, the Patriots’ shortest path to victory is to ask Maye to carry them yet again.
—Andrew Callahan, Boston Herald, 15 Jan. 2026
Playing a school driver who has to get a bunch of kids to safety during a hellacious, out-of-control California fire, McConaughey learned how to drive a bus, grinding gears and everything.
—Brian Truitt, USA Today, 19 Sep. 2025
See All Example Sentences for hellacious
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Andy Greene, Rolling Stone, 28 Feb. 2026
Edmonton superstar Connor McDavid dished out three assists and a hellacious hit on Czechia forward Lukas Sedlec on his first shift early in the first period that set the tone for a fast paced, hard hitting and unselfish display of often breathtaking hockey.
—Scott M. Reid, Oc Register, 13 Feb. 2026
Even against a hellacious Houston defense, the Patriots’ shortest path to victory is to ask Maye to carry them yet again.
—Andrew Callahan, Boston Herald, 15 Jan. 2026
Playing a school driver who has to get a bunch of kids to safety during a hellacious, out-of-control California fire, McConaughey learned how to drive a bus, grinding gears and everything.
—Brian Truitt, USA Today, 19 Sep. 2025
See All Example Sentences for hellacious
Cite this Entry
“Hellacious.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hellacious. Accessed 14 Mar. 2026.
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