Able but not certain to happen; neither inevitable nor impossible.
Capable of being done or achieved; feasible.
Apparently valid, likely, plausible.
Being considered, e.g. for a position.
A possible choice, notably someone being considered for a position.
A particular event that may happen.
A possible one.
Not reasonable; going beyond what could be expected or asked for.
Without the ability to reason; unreasoning.