7 letters · 7 points in Scrabble
verb lengthen or extend in duration or space
verb undergo (as of injuries and illnesses)
verb provide with nourishment
originFrom Middle English susteinen, sustenen, from Old French sustenir (French soutenir), from Latin sustineō, sustinēre (“to uphold”), from sub- (“from below, up”) + teneō (“hold”, verb).
Etymology from Wiktionary, CC BY-SA 3.0