American Dictionary

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Definition certain in American English

certain determiner

determiner
/ˈsɜrt(ə)n/
1

used for referring to someone or something without being specific about exactly what or who they are

Example

Certain basic rules must be obeyed.

Example

There are certain things we need to discuss urgently.

Synonyms and related words
1.1

used for referring to someone or something without saying their name, when you know that the person you are talking to knows who or what you are referring to

Example

A certain person is going to be there, so you might not want to come.

Synonyms and related words
Definition certain in American English