In capital I encountered foreigner (5)

I believe the answer is:

alien

'foreigner' is the definition.
(synonyms)

'in capital i encountered' is the wordplay.
'in' says the answer is hidden in the clue.
'ALIEN' is hidden within 'capital i encountered'.

(Other definitions for alien that I've seen before include "of foreigners" , "Foreigner, outsider" , "Offensive" , "movie!" , "Foreign (from outer space?)" .)

I've seen this clue in The Telegraph.

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