Left after expected time with others (2,2)
I believe the answer is:
et al
'with others' is the definition.
(short for 'et alia', Latin for 'and others')
'left after expected time' is the wordplay.
'left' becomes 'L' (common abbreviation).
'after' means one lot of letters go next to another.
'expected time' becomes 'ETA' (estimated time of arrival).
'l' after 'eta' is 'ET AL'.
(Other definitions for et al that I've seen before include "'And others, to the old Romans (2,2)'" , "And the rest, to the old Romans" , "... and other people (or things) (abbr)" , "Latin notation meaning and others" , "And others (abbrev.)" .)