Crossword Genius

Reveals unintentionally that one does tailoring alterations (4,3)


I believe the answer is:

lets out

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

'reveals' is the definition.
('let out' can be a synonym of 'reveal')

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

Can you help me to learn more?

(Other definitions for lets out that I've seen before include "Reveals" , "rents" , "Discloses" .)

I've seen this clue in the Evening Standard.
Want a hint initially instead of a full solution? Install my app