Crossword Genius

Innate behaviour (8)

Ross

I believe the answer is:

instinct

'innate behaviour' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for instinct that I've seen before include "Gut feeling" , "Thoughtless impulse" , "Inborn impulse to behave in certain way" , "Innate behaviour" , "Natural aptitude" .)

I've seen this clue in The Times and The Sun.
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