from the base of δοκέω; glory (as very apparent), in a wide application (literal or figurative, objective or subjective):--dignity, glory(-ious), honour, praise, worship.
probably from φυλή through the idea of isolation; to watch, i.e. be on guard (literally of figuratively); by implication, to preserve, obey, avoid:--beward, keep (self), observe, save. Compare τηρέω.