Be inclined to take the mislaid part on trust (5)
I believe the answer is:
slant
'be inclined' is the definition.
(thesaurus)
'the mislaid part on trust' is the wordplay.
I cannot quite see how this works, but
'part' could be 'la' (la is a kind of part) and 'la' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'to take' is the link.
Can you help me to learn more?
(Other definitions for slant that I've seen before include "Lean, point of view" , "Lie obliquely" , "Point of view; slope" , "It's at an angle to the horizontal" , "Slope - bias" .)