typic (a)
exemplary (a)
emblematic (a)

Definition: being or serving as an illustration of a type
Example: the free discussion that is emblematic of democracy. an action exemplary of his conduct.

exemplary (a)
model (a)

Definition: worthy of imitation
Example: exemplary behavior. model citizens.

warning (a)
monitory (a)
exemplary (a)
cautionary (a)
admonitory (a)

Definition: serving to warn
Example: shook a monitory finger at him. an exemplary jail sentence.