a. [ See Dere, v. t. ] Doing daring or chivalrous deeds. [ Obs. ] “In derdoing arms.” Spenser. [ 1913 Webster ]
v. i. To do less than is requisite or proper; -- opposed to
v. t. To do less thoroughly than is requisite; specifically, to cook insufficiently;
n. One who underdoes; a shirk. [ 1913 Webster ]
obs. p. p. of Underdelve. [ 1913 Webster ]
n. A dose which is less than required; a small or insufficient dose. [ 1913 Webster ]
v. t. & i. To give an underdose or underdoses to; to practice giving insufficient doses. [ 1913 Webster ]