Crossword Genius

It's prudent to be endlessly polite, I see (7)


I believe the answer is:


'it's prudent' is the definition.
(I've seen this before)

'endlessly polite i see' is the wordplay.
'endlessly' means to remove the last letter.
'see' becomes 'C' (the word for the letter, according to Chambers).
'polite' with its final letter removed is 'polit'.

'to be' is the link.

(Other definitions for politic that I've seen before include "Diplomatic" , "Expedient" , "Prudent, discreet" , "Advisable" , "artful" .)

I've seen this clue in the Evening Standard.
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