Show to be out of place (10)
I believe the answer is:
exposition
'show' is the definition.
(I've seen this before)
'out of place' is the wordplay.
'out of' becomes 'ex' ('out of' in Latin).
'place' becomes 'position' (synonyms).
'ex'+'position'='EXPOSITION'
'to be' acts as a link.
(Other definitions for exposition that I've seen before include "fair" , "Account" , "large show" , "commentary" , "Public display" .)