From τηρός teros (a watch; perhaps akin to 2334 ; to guard (from loss or injury, properly by keeping the eye upon; and thus differing from 5442 which is properly to prevent escaping; and from 2892 which implies a fortress or full military lines of apparatus), that is, to note (a prophecy; figuratively to fulfil a command); by implication to detain (in custody; figuratively to maintain); by extension to withhold (for personal ends; figuratively to keep unmarried): - hold fast, keep (-er), (ob-, pre-, re) serve, watch.