Crossword Genius

Strange to witness revolutionary old party giving approval (3-7)

Ross

I believe the answer is:

odd-looking

'strange to witness' is the definition.
(strange to look at)

'revolutionary old party giving approval' is the wordplay.
'revolutionary' says the letters should be written backwards.
'party' becomes 'do' (do is a kind of party).
'giving approval' becomes 'ok'ing' (giving the OK).
'old'+'do'='olddo'
'olddo' written backwards gives 'oddlo'.
'oddlo'+'oking'='ODD-LOOKING'

(Another definition for odd-looking that I've seen is " Visually peculiar".)

I've seen this clue in The Times.
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