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• don't-know
  don't-know

  noun

  a person who has no opinion or is undecided, as in answering an item on a public-opinion poll.
• don't know
  don't know

  noun

  a person who has not reached a definite opinion on a subject, esp as a response to a questionnaire

don't-know

American  

[dohnt-noh] / ˈdoʊntˈnoʊ /

noun

1. a person who has no opinion or is undecided, as in answering an item on a public-opinion poll.

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don't know British  

noun

1. a person who has not reached a definite opinion on a subject, esp as a response to a questionnaire

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Etymology

Origin of don't-know

First recorded in 1885–90

Example Sentences

See Examples For:

don't know

There is plenty we don’t know, and may never find out, about Baillie’s separation from Netflix.

From The Wall Street Journal ● Aug. 3, 2026

“They don’t know any other way to do it than the way those best players go about their business. …”

From Los Angeles Times ● Aug. 2, 2026

"I really don't know how they managed that," said Evans, who now lives in nearby Leiston.

From BBC ● Aug. 1, 2026

"I disagree 100% with Jeanine Pirro, the U.S. Attorney for the District of Columbia, on the Reflecting Pool. I don't know what she was thinking?"

From Barron's ● Aug. 1, 2026

“Somebody did die tonight. That’s why we – I was late. Everybody’s telling everybody else. You’re the only two who don’t know nothin’ about it.”

From "The Teacher’s Funeral" by Richard Peck