Being behind, with others going back (4)
I believe the answer is:
late
'being behind' is the definition.
(as in behind schedule)
'with others going back' is the wordplay.
'with others' becomes 'et al' (short for 'et alia', Latin for 'and others').
'going back' is a reversal indicator.
'etal' written backwards gives 'LATE'.
(Other definitions for late that I've seen before include "No longer alive; tardy" , "Previous" , "Tardy, slow" , "Running behind time" , "yet to come" .)