ultra

adjective

ˈəl-trə How to pronounce ultra (audio)
Definition of ultranext
as in extreme
being very far from the center of public opinion espouses a kind of ultra conservatism that even some members of his own party cannot support

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of ultra The series is set on the ultra-exclusive Jupiter Island where the privileged world of professional golfers and their wives fractures when a mysterious outsider arrives — and a secret threatens golf’s reigning power couple. — Nellie Andreeva, Deadline, 9 July 2026 Available starting Wednesday, her inaugural scent settles somewhere between a hyper-feminine floral and an ultra-masculine musk, with notes of peach blossom, jasmine, velvety orris, pink peony and soft ambroxan. — Kaleigh Werner, Footwear News, 9 July 2026 Combining topological quantum materials with non-Hermitian physics may eventually enable ultra-sensitive detectors capable of responding to extremely small electric, magnetic, and other environmental signals. — Aamir Khollam, Interesting Engineering, 10 July 2026 Because America has a much larger concentration of billionaires and other ultra-wealthy individuals, average wealth rises to about $696,000 per adult, versus $400,000 in Canada. — Preston Fore, Fortune, 9 July 2026 See All Example Sentences for ultra
Recent Examples of Synonyms for ultra
  1. extreme
  2. radical
  3. rabid
  4. revolutionary
Adjective
  • The National Weather Service said cool air from the north will push the heat dome, responsible for a heat wave that started midweek, south and west in the coming days, relieving some of the most extreme temperatures in the Northeast.
    — Dennis Romero, NBC news, 5 July 2026
  • The laminate reinforces the glass to create a shatter-resistant barrier, preventing shards of glass from flying out during extreme weather.
    — Michelle Mullins, Chicago Tribune, 5 July 2026
Definition of extreme
Adjective
  • That’s what Rebecca Loviconi‘s ‘genre fusion’ feature doc Crime or Rescue will reveal, as the ‘romantic true crime’ story that’s set to hit the doc market follows radical animal activists who unexpectedly fall in love during the filming.
    — Jesse Whittock, Deadline, 6 July 2026
  • Alfaturk16’s leak locks in a July 22 release date for the new Galaxy Watches, potentially giving Samsung just a few weeks to unveil what could prove to be a radical addition to the company’s wearable portfolio.
    — Paul Monckton, Forbes.com, 5 July 2026
Definition of radical
Adjective
  • The other rabid animals were five bats and one each cat, coyote, skunk and woodchuck.
    — Jack Perry, The Providence Journal, 3 July 2026
  • This was a rabid, partisan home-soil advantage that flat-out bullied the squad into surviving.
    — Dieter Kurtenbach, Mercury News, 2 July 2026
Definition of rabid
Adjective
  • The revolutionary leaders proved their character with sacrifice and bravery.
    — Los Angeles Times, Los Angeles Times, 6 July 2026
  • Even if reality ends up being 30–40%, that would prove revolutionary in commercial aviation.
    — Christopher McFadden, Interesting Engineering, 5 July 2026
Definition of revolutionary

Phrases Containing ultra

Browse Nearby Words

ultimatums
ultra
ultrabright
See all Nearby Words

Cite this Entry

“Ultra.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultra. Accessed 10 Jul. 2026.

Copy Citation

More from Merriam-Webster on ultra

Britannica.com: Encyclopedia article about ultra

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Popular in Grammar & Usage

See More

Is that lie 'bald-faced' or 'bold-faced'?

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Commonly Misspelled Words

How to Use Em Dashes (—), En Dashes (–) , and Hyphens (-)
See More

Popular in Wordplay

See More

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List

One-Word Oxymorons: Bittersweet, Spendthrift, and More

Ten Words Ending with a Silent ‘T’

The Words of the Week - Jul 10
See More

Popular

See More

Is that lie 'bald-faced' or 'bold-faced'?

14 Phobias You Probably Haven't Heard Of

The Longest Long Words List
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
banana-mirrored
Contradictory Words Quiz Pick out which word means one thing…and the opp...
See All