numero uno

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English

Etymology

From either Spanish or Italian numero uno (number one).

Noun

numero uno (plural numero unos)

  1. (informal) The most important of a group.
    Synonyms: see Thesaurus:important person
  2. (informal) Oneself, especially one’s own interests.
    In his business ventures, he always looks after numero uno.

Related terms

Italian

Noun

numero uno m

  1. the first in a series, or the most important in a group

Derived terms