American Heritage Dictionary
(3)
Century Dictionary
(4)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
If you know photographers - they may be looking for a baby to do some stock work - but editorial and advertising shoots sound like a phenomenal waste of energy.— Ask MetaFilter
Pros: Sienkiewicz is phenomenal, the collection overall is broad and interesting.— Epinions Recent Content for Home
The first 2 seasons are phenomenal, the latter 2 are still pretty good.— All - Digital Spy - Entertainment and Media News
"It's really quite phenomenal, and wonderful of them to share this history with us."— The Gazette-Enterprise: News
With that said, the audio balance between explosions and audio is phenomenal, which isn't something I can say about action movies all that often.— Dailygame

Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word about twice a week.