Kind to waste time and quarrel that could make you weep (6)
I believe the answer is:
sorrow
'weep' is the definition.
(thesaurus)
'kind to waste time and quarrel' is the wordplay.
'kind' becomes 'sort' (synonyms).
'to waste' is a deletion indicator.
'time' becomes 't' (abbreviation).
'and' means one lot of letters go next to another.
'quarrel' becomes 'row' (synonyms).
'sort' with 't' removed is 'sor'.
'sor'+'row'='SORROW'
'that could make you' is the link.
(Other definitions for sorrow that I've seen before include "Deep sadness" , "Unhappiness" , "Sadness,regret" , "Lamenting" , "'Distress, sadness (6)'" .)