Actually existing; sure to happen; inevitable.
Unfailing; infallible.
Known but not specifically named; indeterminate; indefinite; one or some; sometimes used independently as a noun, and meaning certain persons; see also "one".
Fixed or stated; regular; determinate.
Not to be doubted or denied; established as a fact.
Sure, positive, not doubting.
Having been determined but not specified.
Unnamed or undescribed members (of).
Easily rocked; unstable.
In the style of rock music.
Abounding in, or full of, rocks; consisting of rocks.
Like a rock; rigid, solid.
Having a habitat around or on rocks.
Encountering many problems; difficult, troubled; also, in danger or distress.
Of a person: ill, or unsteady (for example, as a result of a shock).