Is regret out of place in report? (8)
I believe the answer is:
register
'report?' is the definition.
(thesaurus)
'is regret out of place in' is the wordplay.
'out of place' indicates an anagram.
'in' indicates putting letters inside.
'regret' with letters rearranged gives 'regter'.
'is' put inside 'regter' is 'REGISTER'.
(Other definitions for register that I've seen before include "File, record" , "Log" , "(Put one's name down on) list" , "Make an impression: sign on" , "Obituary" .)