Looking for the meaning or definition of the word certain? Here's what it means.
Adjective
Sure, positive, not doubting.
(obsolete) Determined; resolved.
Not to be doubted or denied; established as a fact.
Actually existing; sure to happen; inevitable.
Unfailing; infallible.
Fixed or stated; regular; determinate.
Not specifically named; indeterminate; indefinite; one or some; sometimes used independently as a noun, and meaning certain persons; see also "one".
Determiner
Having been determined but not specified. The quality of some particular subject or object which is known by the speaker to have been specifically singled out among similar entities of its class.