adv. [f. prec. + -LY2.] In a caustic manner.
1850. ‘Bat,’ Cricketer’s Manual, 100. A writer … caustically remarked.
1876. E. Mellor, Priesth., v. 201. Their divergences of opinion have been caustically likened … to the foxes which Samson bound, which, though united at their tails, were wide apart in their bodies, and widest of all at their heads.
