certain

(with "the") Something certain.

Sure, positive, not doubting.

“I was certain of my decision.”

Determined; resolved.

Not to be doubted or denied; established as a fact.

Actually existing; sure to happen; inevitable.

“Bankruptcy is the certain outcome of your constant gambling and lending.”

Unfailing; infallible.

I have often wished , that I knew so certain a remedy in any other disease

Fixed or stated; regular; determinate.

Known but not specifically named; indeterminate; indefinite; one or some; sometimes used independently as a noun, and meaning certain persons; see also "one".

(with of) Unnamed or undescribed members (of).

“There were serious objections to certain of the proposals.”