Emil's strangely happy expression (5)

I believe the answer is:

smile

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

'emil's strangely' is the wordplay.
'strangely' indicates anagramming the letters.
'emils' anagrammed gives 'SMILE'.

(Other definitions for smile that I've seen before include "Visually express amusement" , "Happy facial expression" , "Pleasant expression" , "Show you're pleased" , "Show amusement or pleasure" .)

I've seen this clue in the Evening Standard.

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