Please enable javascript to use dictionary! Howto enable javascript?
firm [firmed, firming, firms]▼(to become firm)verb[UK: fɜːm] [US: ˈfɝːm]
stiffen [stiffened, stiffening, stiffens]▼(to become stiff)verb[UK: ˈstɪf.n̩] [US: ˈstɪf.n̩]
toughen [toughened, toughening, toughens]▼(to become tougher)verb[UK: ˈtʌf.n̩] [US: ˈtʌf.n̩]
↑