Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “Lord knows”

Lord knows

used to say that you do not know : Lord knows where we're going to get the money from.InterjectionsSounds used as interjections
(Definition of Lord knows from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Translations of “Lord knows”

Word of the Day

prenuptial agreement

an official document signed by two people before they get married that says what will happen to their possessions and/or children if they divorce (= officially stop being married)

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More