ul·​tra·​se·​ri·​ous ˌəl-trə-ˈsir-ē-əs How to pronounce ultraserious (audio)
: extremely serious: such as
: very thoughtful or subdued in appearance or manner
wearing an ultraserious expression
: having exceedingly important or dangerous consequences
an ultraserious problem/injury
also : involving or deserving an exceedingly large amount of thought, attention, or work
an ultraserious topic
: not joking or funny
her ultraserious tone/expression
: extremely interested or devoted
an ultraserious student
: exceedingly great or impressive in quality, quantity, extent, or degree
an ultraserious piece of equipment

Examples of ultraserious in a Sentence

Recent Examples on the Web Huebel played the part as an ultraserious Jeff Probst type, standing by gravely as the moms took off their bikini tops and threw them in a fire pit when they were voted off the island. Emily Yahr, Washington Post, 30 Jan. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ultraserious.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1851, in the meaning defined above

Time Traveler
The first known use of ultraserious was in 1851

Dictionary Entries Near ultraserious

Cite this Entry

“Ultraserious.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultraserious. Accessed 21 Feb. 2024.

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