Definition of ultra in English:

ultra

Line breaks: ultra
Pronunciation: /ˈʌltrə
 
/

noun

informal
  • An extremist: ultras in the animal rights movement
    More example sentences
    • Maybe there will be some attempted ideological putsch of Blairite ultras to come.
    • Today, Eureka has been taken over as much by those wishing Australia to declare itself a republic as by hard core left-wing unions and right-wing Nationalist ultras.
    • Bush advisers are quick to point out that the President is focusing on far more than GOP ultras.
    Synonyms
    extremist, radical, fanatic, zealot, diehard, revolutionary, rebel, militant, subversive

Origin

early 19th century: an independent usage of ultra-, originally as an abbreviation of French ultra-royaliste.

More definitions of ultra

Definition of ultra in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day maelstrom
Pronunciation: ˈmeɪlstrəm
noun
a powerful whirlpool in the sea