Declined new pleas, on the day (6)
I believe the answer is:
lapsed
'declined' is the definition.
(I've seen this before)
'new pleas on the day' is the wordplay.
'new' is an anagram indicator.
'on' says to put letters next to each other.
'the day' becomes 'd'.
'pleas' with letters rearranged gives 'lapse'.
'lapse'+'d'='LAPSED'
(Other definitions for lapsed that I've seen before include "Ceased to practise faith" , "Became invalid (through lack of renewal)" , "Expired over pedals" , "Pleads, having failed to maintain standards" , "declined" .)