Sinister to have port passed (4,6)

I believe the answer is:

left handed

'sinister' is the definition.
(thesaurus)

'port passed' is the wordplay.
'port' becomes 'left' ('left' can be a synonym of 'port'**).
'passed' becomes 'handed' ('hand' can be a synonym of 'pass').
'left'+'handed'='LEFT-HANDED'

'to have' acts as a link.

(Another definition for left handed that I've seen is " As roughly one in ten".)

I've seen this clue in The Telegraph.

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