Definitions

open question

NOUN

undecided issue

Synonyms

WEAK

anybody's guess loose end question rhetorical question toss of a coin

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For now, the true reason behind the rise and disappearance of giant insects remains an open question.

From Science Daily • Apr. 25, 2026

The open question now is how much progress the countries can make in Pakistan.

From BBC • Apr. 24, 2026

Whether it will be enough to spare her is an open question.

From Salon • Apr. 23, 2026

I think it’s an open question, and an important one.

From Slate • Apr. 9, 2026

Whether the human race can actually maintain a population of five billion or more without a crash with a hot virus remains an open question.

From "The Hot Zone" by Richard Preston