The origin of "awesome" was "something that inspires awe". Today the word has evolved to common slang. The original meaning has become somewhat forgotten; the idea of something being awe-inspiring is now shortened to it just being "awesome".
ie: He had the awesome idea of getting the family together for a much needed road trip.
An overused adjective intended to denote something as "cool" or "great" but instead winds up meaning "lame." This is actually a reflection of the lameness of person using the word, the degree of which is directly proportionate to difference between the user's perspective of the so-called awesome object / person / situation and that of a reasonably sober, well-informed observer.
"Bono is awesome."
"This pizza is awesome" (when the pizza in question comes from a food court at the airport)