Crossword Genius

Uncomfortable when out (3,2,4)

Ross

I believe the answer is:

not at home

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'out' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

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(Other definitions for not at home that I've seen before include "barking at the moon" , "Ignoring visitors" .)

I've seen this clue in The Daily Express.
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