English▸ noun
1 a person with extreme views, especially on politics; an extremist:
ultras in the animal rights movement.
▪ a member of a group of fervent soccer fans who support their team with banners, organized chants, and choreographed displays:
Italian football is renowned for its passionate ultras
the club's ultras booed his name and showed off banners voicing their anger.
2 short for ultramarathon:
the best way to tackle an ultra is to divide the race into manageable chunks.
▸ adverb [as submodifier] very; extremely:
the play was not just boring, it was ultra boring
ultra wealthy individuals.
– ORIGIN early 19th century: an independent usage of ultra-, originally as an abbreviation of French ultra-royaliste ‘ultra-royalist’.