An increasingly bare display a priest set out (10)
I believe the answer is:
striptease
'an increasingly bare display' is the definition.
(stripping means someone gets increasingly naked)
'a priest set out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'a'+'priest'+'set'='apriestset'
'apriestset' is an anagram of 'STRIPTEASE'.
(Other definitions for striptease that I've seen before include "Revelatory performance" , "performance taking off" , "Erotic performance" , "adult show" , "Form of entertainment" .)