Jump To:

• 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.

---

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

---

Etymology

Origin of don't-know

First recorded in 1885–90

Example Sentences

See Examples For:

don't know

“I don’t know how it led to it, but he came over,” she tells the women.

From Los Angeles Times ● Sep. 9, 2026

“I don’t know whether or not the actors realised — we never discussed it,” Verhoeven said of playing his propaganda relentlessly straight.

From Salon ● Sep. 9, 2026

"I miss my son every day, and I don't know if I will ever be able to regain my balance," she testified.

From Barron's ● Sep. 9, 2026

"What really annoys me the most is just the fact that I don't know why," she said.

From BBC ● Sep. 8, 2026

Honestly, I don’t know how anyone can be mean to Rue.

From "Split the Sky" by Marie Arnold