certain
🇺🇸
/ˈsɜːrtn/
🇬🇧
/ˈsɜːtn/
completely sure about something
I am certain that I left my keys on the table.
something that will definitely happen
It is certain that he will win the race.
referring to a specific thing or person, but not named
A certain book on the shelf caught my attention.
slightly; a little bit
She has a certain charm about her.
used with a name to indicate unfamiliarity
I met a certain Mr. Smith, but I don't remember him well.
referring to some people or things in a group without naming them
Certain of the students have already finished their homework.