Crossword Genius

Feeling anxious, having lost ID in quayside scuffle (6)

Ross

I believe the answer is:

queasy

'feeling anxious' is the definition.
(queasy can mean feeling sick or anxious)

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

(Other definitions for queasy that I've seen before include "Squeamish - nauseous" , "Nauseous or bilious" , "Feeling slightly sick, maybe with indigestion" , "Sickish" , "Ailing" .)

I've seen this clue in The Guardian.
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