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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.
The thesaurus of synonyms and related words is fully integrated into the dictionary entries. Click on the T button in an entry to review the synonyms and related words for that meaning.
Several hundred people were affected by the previously unknown virus.
Most of her friends are unknown to me.
For some unknown reason, the plane landed at the wrong airport.
an unknown poet
Unknown to the MP, his secretary had already spoken to reporters.
This is the British English definition of unknown. View American English definition of unknown.
Change your default dictionary and thesaurus to American English.
View the pronunciation for unknown.
a game in which two teams of seven players take turns to chase and try to touch players on the opposing team
using sarcasm to upset someone or to show anger
a response to a scathing comment or unpleasant situation
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Definition of unknown from the online English dictionary from Macmillan Publishers Limited.