be born yesterday

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English[edit]

Etymology[edit]

born + yesterday

Verb[edit]

be born yesterday ‎(past tense only)

  1. (idiomatic, informal) To be new, naive, innocent, inexperienced, or easily deceived.
    I was not born yesterday, you know. I have done this before!
    • 1915, William MacLeod Raine, Steve Yeager, ch. 6:
      "Say, do I look like I was born yesterday? See any green in my eye, Cactus Center?"
    • 1998, Gwyn Hyman Rubio, Icy Sparks‎, page 155:
      "Compared to me, you were born yesterday."
    • 2005, Howard Zinn and Donaldo Pereira Macedo, Howard Zinn on Democratic Education‎, page 69:
      If you don't know important things about history, then it's as if you were born yesterday.

Usage notes[edit]

  • Mostly used in the negative to indicate that one is not as naive as had been implied, but sometimes in an affirmative form, as in the quotations above.

Synonyms[edit]

Translations[edit]

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