Synonyms of cardinal in English:

cardinal

adjective

  • 1 you've broken one of the cardinal rules
    fundamental, basic, main, chief, primary, crucial, pivotal, prime, principal, paramount, preeminent, highest, key, essential
    [Antonyms] unimportant
  • Definition of cardinal in:

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    Word of the day animalcule
    Pronunciation: ˌanɪˈmalkjuːl
    noun
    a microscopic animal