trebling
三重
Tre·ble, v. t. [imp. & p. p. Trebled p. pr. & vb. n. Trebling.]
1. To make thrice as much; to make threefold. “Love trebled life.”
2. To utter in a treble key; to whine. [Obs.]
He outrageously
(When I accused him) trebled his reply. --Chapman.