Still not showing emotion (7)

I believe the answer is:

unmoved

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'still' is the definition.
(thesaurus)

'not showing emotion' is the wordplay.
'not' becomes 'un' (prefix meaning 'not').
'showing emotion' becomes 'moved' (I can't explain this - if you can you should give a lot more credence to this answer).
'un'+'moved'='UNMOVED'

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(Other definitions for unmoved that I've seen before include "Still in the original position" , "Adamant; not budging" , "Not affected by emotion" , "Not swayed" , "Impassive" .)

I've seen this clue in The Globe and Mail.

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