revelation · noun /ˌrev.əˈleɪ.ʃən/
revelation
C2 C a piece of information that is discovered although it was intended to be kept secret
Dictionary example:
He resigned following revelations about his private life.
Learner example:
No, the mayor didn't know, but said he was looking forward to any more revelations about their heroic community member. (Certificate of Proficiency in English; C2; Dutch)
be a revelation
C2 to be an extremely pleasant surprise
Dictionary example:
Anna's musical talent was a revelation.
Learner example:
Every word you said was a revelation to me. (Certificate of Proficiency in English; C2; Spanish)
