ppl. a. (Stress var.) [UNDER-1 10 a, or f. UNDERDO v.] Of meat: Insufficiently cooked; left slightly raw after cooking.
1683. Tryon, Way to Health, 111. That it [sc. roast flesh] be neither over nor under-done, but of the two, it is better that it be under-done.
1798. Spirit Public Jrnls. (1799), II. 202. I shall give an account of every dinner I eat, whether under or over-done.
1807. Jane Austen, Lett. (1884), I. 315. A boiled leg of mutton, underdone even for James.
1842. Dickens, Amer. Notes, x. A plate of underdone roast-beef.
1874. H. W. Pullen, Mod. Christianity (1876), 65. You make quite as much fuss, if the mutton is under-done.
transf. 1837. Barham, Ingol. Leg., Ser. I. Spectre of Tappington. A little ferret-faced woman with underdone eyes.