Like a monkey’s mistake — a blessing being captured (9)

I believe the answer is:

baboonish

I'm a little stuck... Click here to teach me more about this clue!

'like a monkey's' is the definition.
I can't judge whether this defines the answer.

'mistake a blessing being captured' is the wordplay.
'mistake' becomes 'bish' (informal term for an error).
'blessing' becomes 'boon' (synonyms).
'being captured' is an insertion indicator.
'a'+'boon'='aboon'
'bish' enclosing 'aboon' is 'BABOONISH'.

Can you help me to learn more?

(Another definition for baboonish that I've seen is " Monkey-like".)

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app