Crossword Genius

Double act no longer seen (4)

Ross

I believe the answer is:

dodo

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'double act no longer seen' is the definition.
I can't judge whether this defines the answer.

'double act' is the wordplay.
'double' shows that letters should be duplicated.
'act' becomes 'do' (to do is to act or execute a task).
'do' duplicated is 'DODO'.

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(Other definitions for dodo that I've seen before include "Native of Mauritius" , "Proverbially dead bird" , "silly person" , "Extinct bird of Mauritius, very dead" , "Repetitive extinct animal" .)

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