say it: UHL-truh
ultra is an adjective meaning "(used of opinions and actions) far beyond the norm". It carries one recorded sense.
(used of opinions and actions) far beyond the norm
“extremist political views”
“radical opinions on education”
“an ultra conservative”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for ultra come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.