Thayer's Greek Lexicon

 1. behind
  1) to come late or too tardily
1a1. to be left behind in the race and so fail to reach the
goal, to fall short of the end
1a2. metaph. fail to become a partaker, fall back from
  2) to be inferior in power, influence and rank
1b1. of the person: to be inferior to
  3) to fail, be wanting
  4) to be in want of, lack
2. to suffer want, to be devoid of, to lack (be inferior) in
excellence, worth