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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.more
The origin of the word is uncertain.
It is uncertain how they entered the property.
Despite recent research, the precise mechanism of the virus remains uncertain.
I left the meeting feeling anxious, and uncertain about what to do next.
Greg was uncertain how to respond to this odd request.
This is the British English definition of uncertain. View American English definition of uncertain.