τηρεῖν
From LSJ
Greek > English (Woodhouse Verbs Reversed)
(see also τηρέω): guard, protect, watch, be on the look out, keep a look out, keep a look-out for, keep watch, lie in wait for, observe carefully, sit up for, watch for
Lexicon Thucydideum
observare, to notice, watch, 1.65.1, 1.134.2, 2.83.2, 3.22.1, 4.26.7, 4.27.1, 4.60.1, 4.110.2, 5.82.2, 6.2.4, 6.100.1, 8.108.4,
custodire, to guard, keep, 7.80.1,
PASS. custodiri, to be guarded, be kept, 2.13.7, 4.30.4, 4.108.1.