If have been to my fair share of web conferences, meetups and startup events and what struck me was that in a lot of the presentations everything is awesome! (I do not know the opposite word of awesome, but trust me: a lot of stuff in these presentation was exactly the opposite of awesome)
I think awesome is one the most overused words out there. Maybe it is because I attend a lot of events where the speakers and the guests are not native english speakers and it is just a lack of english vocabulary. But also on Slideshare there are over 26,000 awesome web presentations. It seems that web people just love the word 'awesome'! Maybe they are just not very creative in finding words to describe the stuff they make. Maybe they are just a little lazy.
So maybe I can help out a little (as good as I can as a native Austrian who speaks sort of german) I have collected some words one could use instead of awesome:
breathtaking, amazing, lean, stunning, bodacious, brilliant, grand, astounding, astonishing, stupendous, extraordinary, incredible, beautiful, unbelievable, magnificent, wonderful, spectacular, remarkable, phenomenal, great, prodigious, the cats pajamas, gorgeous, excellent, grandiose, miraculous, formidable, cracking, effective, imposing, impressive, lovely, perfect, mind-boggling, mind-blowing, out of this world, supercalifragilisticexpialidocious, grand, striking, ripping, fantastic, fresh, the bomb, ...
It is not a really long list of words, but it should get you started.
Now go out and create something awesome! :)