Definition of ultra in English:

ultra

noun

informal
  • 1An extremist.

    ‘ultras in the animal rights movement’
    • ‘The latter provision would be used by loyalist ultras to demand that the RUC remove the Irish Tricolour even when it was being displayed in a predominantly nationalist area.’
    • ‘The ultras have been known to appropriate the Nazi font when spelling the ‘S.S.’’
    • ‘He said for long-lasting peace the ultras should come forward for a dialogue and that the government is also trying to explore different strategies in this regard.’
    • ‘They know that down in the Bogside or along the Shankill Road there are bound to be ultras who will indignantly denounce any compromise deal as treason.’
    • ‘When liberals in Spain overthrew their king, the ultras pressed the reluctant government for action.’
    • ‘It was clear that de Gaulle, anxious to strike before the United Nations voted on independence for Algeria, favoured the third option, and equally clear that ultras in the army and the pieds-noirs would not budge from the second.’
    • ‘Gandhi said the state government did not release the ultras unilaterally but with the approval of the country's intelligence agencies, according to a Press Trust of India report.’
    extremist, radical, fanatic, zealot, diehard, revolutionary, rebel, militant, subversive
    View synonyms
  • 2

    ‘the best way to tackle an ultra is to divide the race into manageable chunks’
    short for ultramarathon
    • ‘The Yukon Arctic Ultra follows the Yukon Quest Trail and the distances for this event include a marathon, 100 miles, 300 miles and 460 miles.’
    • ‘For longtime runners who have competed in and finished several marathons, an ultra is an enticing challenge.’
    • ‘I thought I would be a natural for ultras.’
    • ‘One of the major hurdles to leap, in training for ultras (even marathons), is getting in sufficient training distances to fully prepare, without "destroying" your knees, hips, ankles, feet and lower back.’
    • ‘I'd been thinking about doing an ultra for several years.’
    • ‘She graduated to the 50-mile Nifty 50 Ultra in Coventry, R.I., and in 1997 did a 100-mile endurance run along mountainous trails in Vermont.’
    • ‘Despite the longer distances, ultras may actually be easier on the body than running a road marathon.’
    • ‘He is the first amputee to finish the Great Sahara Run and the Badwater 135 mile Death Valley Ultra (5 marathons back to back), which takes place in temperatures close to those recommended for slow cooking chicken.’

Origin

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

Pronunciation:

ultra

/ˈʌltrə/