Befallen without mishap (4)
I believe the answer is:
been
'befallen' is the definition.
Although both the answer and definition are past participle verbs, I cannot understand how they can define each other.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for been that I've seen before include "Past participle of be" , "(Have) gone in the past (to somewhere)" .)