What context can I use each word in?
Learn when and how to use these words with these examples!
certain
Example
I am certain that I left my keys on the table. [certain: adjective]
Example
She spoke with a certain authority that commanded attention. [certain: noun]
sure
Example
I am sure that I locked the door before leaving. [sure: adjective]
Example
He nodded his head in sure agreement. [sure: adverb]
Good things to know
Which word is more common?
Sure is more commonly used than certain in everyday language. Sure is versatile and can be used in various contexts, while certain is less common and tends to be used in more formal situations or when referring to specific things.
Whatโs the difference in the tone of formality between certain and sure?
While certain is generally considered more formal, sure can be used in both formal and informal contexts. It is a more flexible word that can adapt to different levels of formality.
