No longer having time, stop -- or run on? (6)
I believe the answer is:
extend
'run on?' is the definition.
(thesaurus)
'no longer having time stop' is the wordplay.
'no longer' becomes 'ex'.
'having' says to put letters next to each other.
'time' becomes 't'.
'stop' becomes 'end' ('end' can be a synonym of 'stop'**).
'ex'+'t'+'end'='EXTEND'
'or' is the link.
(Other definitions for extend that I've seen before include "Enlarge, widen" , "Spread - offer" , "Stretch out, say the hand of friendship" , "continue" , "make offer?" .)