luaithe1. 1. f. (gs. ~).Quickness, swiftness; earliness. Ar a ~, at the earliest; first thing. Cá ~? How soon? Dá ~, however fast. Dá ~ is ea is fearr é, the sooner the better. A ~ a fuair sé é, as soon as he got it. Ní beag a ~, it will come soon enough. 2. gsf. & comp. of luath1.