Wasted a quid on it daily (9)
I believe the answer is:
quotidian
'daily' is the definition.
(thesaurus)
'wasted a quid on it' is the wordplay.
'wasted' indicates an anagram.
'a'+'quid'+'on'+'it'='aquidonit'
'aquidonit' is an anagram of 'QUOTIDIAN'.
(Other definitions for quotidian that I've seen before include "Recurring every day, commonplace" , "Daily, recurring every day" , "Ordinary; daily" , "Day-to-day" .)