¹ultra

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adjective ul·tra \ˈəl-trə\

Definition of ULTRA

:  going beyond others or beyond due limit :  extreme

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Examples of ULTRA

1. <espouses a kind of ultra conservatism that even some members of his own party cannot support>

Origin of ULTRA

ultra-

First Known Use: 1818

Related to ULTRA

Synonyms

extremist, fanatic (or fanatical), rabid, radical, revolutionary, revolutionist, extreme

Antonyms

middle-of-the-road, nonrevolutionary, unrevolutionary

Related Words

subversive, violent, wild; reactionary

Near Antonyms

conservative, moderate, temperate; conventional, orthodox, traditional; liberal, progressive

²ultra

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noun

Definition of ULTRA

:  one that is ultra :  extremist

Origin of ULTRA

ultra-

First Known Use: 1819