FROM STRONG’S GREEK DICTIONARY (1890)

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

suntereo συντηρέω — soon-tay-reh'-o — from 4862 and 5083; to keep closely together, i.e. (by implication) to conserve (from ruin); mentally, to remember (and obey):--keep, observe, preserve.

see GREEK for 4862

see GREEK for 5083