sustain

Definition

To maintain, or keep in existence.

Etymology

From Middle English susteinen, sustenen, from Old French sustenir (French soutenir), from Latin sustineō, sustinēre (“to uphold”), from sub- (“from below, up”) + teneō (“hold”, verb).

Example Sentences

• "The professor had trouble sustaining students’ interest until the end of her lectures."
• "The city came under sustained attack by enemy forces."
• "Sam managed to sustain his erection for two straight hours."