Strong impulse (4)

I believe the answer is:

urge

'strong impulse' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for urge that I've seen before include "Constrain" , "Advise earnestly, spur" , "Encourage; impulse" , "Capital of Colombia" , "Implore" .)

I've seen this clue in The Independent, The Wall Street Journal, The Mirror, the USA Today and The Times.

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