ἀτακτέω -ῶ (ἄτακτος), primarily, of soldiers marching,
to be out of order,
to quit the ranks; hence, metaphorically, to be remiss, fail in the performance of duty (in π, of truancy on the part of an apprentice): 2Th.3:7 (on ἀ. and its cognates, see M,
Th., 152 ff; MM, s.vv.). (
AS)