Crossword Genius

Learned not to start or repeat (7)

Ross

I believe the answer is:

iterate

'repeat' is the definition.
('iterate' can be a synonym of 'repeat')

'learned not to start' is the wordplay.
'learned' becomes 'literate' ('literate' can be a synonym of 'learned').
'not to start' means to remove the first letter.
'literate' with its first letter taken away is 'ITERATE'.

'or' acts as a link.

(Other definitions for iterate that I've seen before include "Utter or perform repeatedly" , "State repeatedly, say again" , "Say again, repeat" , "Repeat, state again" , "Recapitulate" .)

I've seen this clue in The Telegraph.
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