Apt to take illegally (11)
I believe the answer is:
appropriate
This clue could be a double definition.
'apt' is the first definition.
(synonyms)
'take illegally' is the second definition.
'appropriate' can be an answer for 'take' (appropriating is a kind of taking). I'm not sure about the 'illegally' bit.
'to' is the link.
Can you help me to learn more?
(Other definitions for appropriate that I've seen before include "half-inch" , "Fit" , "Proper; take" , "Suitable, fitting" , "Befitting" .)