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ultra- - definition and synonyms

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prefix     ultra- pronunciation in American English
  1. 1
    extremely: used with many adjectives

    an ultracautious approach

    ultra-right-wing organizations

    an ultra-modern kitchen

    Synonyms and related words
  2. 2
    science outside a particular range: used with some nouns and adjectives

    ultrashort radio waves

    Synonyms and related words
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Open Dictionary

patio diplomacy

high-level diplomats meeting and dining in an informal environment e.g. a party or club

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