Based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random.
Not representative or symbolic; not iconic.
Determined by independent arbiter.
Determined by impulse rather than reason; heavy-handed.
Any, out of all that are possible.
Anything arbitrary, such as an arithmetical value or a fee.
Not obligate; optional, discretionary or elective.
That grants permission or power to do something.
Able to perform a particular life function, or to live generally, in more than one way.
Of or relating to faculty, especially to mental faculty.
At which a given function is positive.