5 down
Very
true,
origin
forgotten
(6)
Very true, origin forgotten (6)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
Right, so Very is the definition here — think "the very thing" meaning "the actual thing". For the wordplay, FACTUAL means "true", and if you drop its origin, the first letter F, you're left with ACTUAL.