Word.ws English Dictionary

ultra-

/ˈʌltɹə/

ultra- prefix: greater than normal quantity or importance, as in ultrasecret.

Prefix

ultra-

  1. Greater than normal quantity or importance, as in ultrasecret.
  2. Beyond, on the far side of, as in ultraviolet.
    Synonyms:
    trans-
  3. Beyond, outside of, as in ultraterrestrial.
  4. Excessively, to an extreme, as in ultramicroscopic.
    • In order to grant the rich these pleasures, the social contract is reconfigured. […] The public realm is privatised, the regulations restraining the ultra-wealthy and the companies they control are abandoned, and Edwardian levels of inequality are almost fetishised.2013 May 17, George Monbiot, “Money just makes the rich suffer”, in The Guardian Weekly, volume 188, number 23, page 19
    Synonyms:
    over-, hyper-, ana-
  5. (augmentative) Intensely, extremely, or exceptional

Synonyms of ultra-

8 more synonymsFewer synonyms

Antonyms

Origin of ultra-

Borrowed from Latin ultrā (“beyond”).

Words formed from ultra-

Questions about ultra-

What does ultra- mean?
Ultra- means greater than normal quantity or importance, as in ultrasecret.
What part of speech is ultra-?
Ultra- is a prefix.
How do you pronounce ultra-?
Ultra- is pronounced /ˈʌltɹə/.

Words near ultra- in the dictionary

  1. ultra rich
  2. Ultra SCSI
  3. ultra shortcut
  4. ultra shortcuts
  5. ultra vires
  6. ultra-
  7. ultra-conservative
  8. ultra-darwinism
  9. ultra-darwinist
  10. ultra-darwinists
  11. ultra-diffuse

Source and license

Adapted from Wiktionary: ultra- (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-ultra-.wav.

Cite this entry: “ultra-.” Word.ws, https://word.ws/ultra-. Based on Wiktionary, CC BY-SA 4.0.