Definitionen
1.AdjectiveVery remarkable; highly extraordinary; amazing."phenomenal effort; phenomenal musician; phenomenal success; phenomenal victory"
2.AdjectivePerceptible by the senses through immediate experience.
3.AdjectiveOf or pertaining to the appearance of the world, as opposed to the ultimate nature of the world as it is in itself.
4.Adjective↑ “phenomenal, adj. and n.”, in OED Online , Oxford: Oxford University Press, launched 2000.