FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

diatereo διατηρέω — dee-at-ay-reh'-o — from 1223 and 5083; to watch thoroughly, i.e. (positively and transitively) to observe strictly, or (negatively and reflexively) to avoid wholly:--keep.

see GREEK for 1223

see GREEK for 5083