Source : Webster's Revised Unabridged Dictionary (1913)

Archetypical \Ar`che*typ"ic*al\, a.
   Relating to an archetype; archetypal.

Source : WordNet®

archetypical
     adj : representing or constituting an original type after which
           other similar things are patterned; "archetypal
           patterns"; "she was the prototypal student activist"
           [syn: {archetypal}, {prototypal}, {prototypic}, {prototypical}]