Crossword Genius

Express approval and leave daughter inside? I'm astonished (2,4)

Ross

I believe the answer is:

ye gods

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

'i'm astonished' is the definition.
('ye gods' is an expression of surprise)

I don't understand how the rest of the clue works.

Can you help me to learn more?

I've seen this clue in The Irish Times.
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