Crossword Genius

Disallow corsets, yet lasts longer? (8)

Ross

I believe the answer is:

outstays

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

'yet lasts longer?' is the definition.
I can't tell whether this definition defines the answer.

'disallow corsets' is the wordplay.
'disallow' becomes 'out' (I can't justify this - if you can you should give a lot more credence to this answer).
'corsets' becomes 'stays' (I've seen this before).
'out'+'stays'='OUTSTAYS'

Can you help me to learn more?

(Another definition for outstays that I've seen is " Remains too long".)

I've seen this clue in the Sydney Morning Herald.
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