Fraught with danger.
Of uncertain, risky outcome.
Nauseating, rank.
Of doubtful or uncertain efficacy, provenance, etc.; dodgy.
Encountering many problems; difficult, troubled; also, in danger or distress.
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.
Easily rocked; unstable.
Of a person: ill, or unsteady (for example, as a result of a shock).