Unruly apes get the ruler for talking (8)
I believe the answer is:
speaking
'talking' is the definition.
('speaking' can be similar in meaning to 'talking')
'unruly apes get the ruler' is the wordplay.
'unruly' indicates anagramming the letters.
'get' means one lot of letters go next to another.
'the ruler' becomes 'king' (king is a kind of ruler**).
'apes' with letters rearranged gives 'spea'.
'spea'+'king'='SPEAKING'
'for' is the link.
(Other definitions for speaking that I've seen before include "Talking" , "a way of passing the word" , "conveying meaning" , "Conversing" , "Saying something" .)