treble

/ˈtrebl/ verb [I or T]

Definition

› to increase to three times the size or amount, or to make something do this: profits/sales/shares treble In its first six months, Camelot's profits trebled.a cost/price trebles The price of property has almost trebled in the last two years. They invested $2m in trebling capacity at their processing plant last year. → See also triple adjective

(Definition of treble verb from the Cambridge Business English Dictionary © Cambridge University Press)