Crossword Genius

Once right to cry out (7)

Ross

I believe the answer is:

exclaim

'cry out' is the definition.
(synonyms)

'once right' is the wordplay.
'once' becomes 'ex' (prefix meaning former or onetime).
'right' becomes 'claim' (claim is a kind of right).
'ex'+'claim'='EXCLAIM'

'to' is the link.

(Other definitions for exclaim that I've seen before include "Shout out" , "Announce vehemently" , "Cry out (in shock, etc)" , "Speak suddenly" , "Express surprise" .)

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