Determined by impulse rather than reason; heavy-handed.
Not representative or symbolic; not iconic.
Determined by independent arbiter.
Based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random.
Any, out of all that are possible.
Anything arbitrary, such as an arithmetical value or a fee.
Happening by chance, casual.
probability; possibility.
The probability of something happening.
An opportunity or possibility.
Random occurrence; luck.
To try or risk.
To discover something by chance.
To rob, cheat or swindle someone.