Slow to put your mind to (10)
I believe the answer is:
deliberate
'slow' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for deliberate that I've seen before include "muse" , "Premeditated" , "Calculated - think carefully" , "Ponder" , "Done intentionally" .)