sup 1 (s?p)tr. & intr.v. supped, sup·ping, sups To eat or drink (something) or engage in eating or drinking by taking small swallows or mouthfuls: supped the hot soup; supped away daintily.n. A small swallow or mouthful of liquid food; a sip.[Middle English soupen, from Old English s?pan; see seu?- in Indo-European roots.]sup 2 (s?p)intr.v. supped, sup·ping, sups To eat an evening meal; have supper.[Middle English soupen, from Old French souper, from soupe, soup; see soup.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.sup (s?p) vb, sups, supping or supped1. (Cookery) (intr) archaic to have supper2. (Cookery) (tr) obsolete to provide with supper[C13: from Old French soper; see sup2]sup (s?p) vb, sups, supping or supped1. (Physiology) to partake of (liquid) by swallowing a little at a time2. (Physiology) dialect Scot and Northern English to drinkna sip[Old English s?pan; related to Old High German s?fan, German saufen; see also sup1]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014sup1 (s?p) v. supped, sup?ping. v.i. 1. to eat the evening meal; have supper. v.t. 2. to provide with or entertain at supper. [1250?1300; Middle English s(o)upen