3 ms·I don't know if this is what you're hinting at, but trebled is a valid word.by GrahamsNumber 13y agoI don't know if this is what you're hinting at, but trebled is a valid word.collyw 13y agoYes it is. Doubled, trebled, quadrupled. You Americans should learn to speak English properly.oxtopus 13y agoGood call. Looks like it's a british english convention. I'd not seen that before, thanks!jstalin 13y ago"Treble" is common parlance in US English legalese.