Feat of splashing cash with compliment (14)
I believe the answer is:
accomplishment
'feat' is the definition.
(thesaurus)
'splashing cash with compliment' is the wordplay.
'splashing' indicates anagramming the letters (I've seen 'splashing of' mean this (I've seen this in other clues)).
'with' means one lot of letters go next to another.
'cash' put after 'compliment' is 'complimentcash'.
'complimentcash' with letters rearranged gives 'ACCOMPLISHMENT'.
'of' is the link.
(Other definitions for accomplishment that I've seen before include "Something achieved" , "Successful achievement" , "Skill" , "exploit" .)