worst (wûrst)adj.Superlative of bad1 ill1. Most inferior, as in quality, condition, or effect: the worst hitter on the team.2. Most severe or unfavorable: the worst winter in years.3. Being furthest from an ideal or a standard; least desirable or satisfactory: This is the worst cafeteria!adv.Superlative of badly ill In the worst manner or degree.tr.v. worst·ed, worst·ing, worsts To gain the advantage over; defeat: was worsted in the argument.n. Something that is worst.Idioms: at (the) worst Under the most negative circumstances, estimation, or interpretation: At worst, the storm will make us postpone the trip. get/have the worst of it To suffer a defeat or disadvantage. if (the) worst comes to (the) worst If the very worst thing happens. in the worst way Informal Very much; a great deal: wanted to be elected in the worst way.[Middle English, from Old English wyrsta; see wers- in Indo-European roots.]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.worst (w??st) adj the superlative of bad1adv1. in the most extreme or bad manner or degree2. least well, suitably, or acceptably3. (in combination) in or to the smallest degree or extent; least: worst-loved. n4. the worst the least good or most inferior person, thing, or part in a group, narrative, etc5. (often preceded by at) the most poor, unpleasant, or unskilled quality or condition: television is at its worst these days. 6. the greatest amount of damage or wickedness of which a person or group is capable: the invaders came and did their worst. 7. the weakest effort or poorest achievement that a person or group is capable of making: the applicant did his worst at the test because he did not want the job. 8. the worst a. in the least favourable interpretation or viewb. under the least favourable conditions9. if the worst comes to the worst if all the more desirable alternatives become impossible or if the worst possible thing happens10. come off worst get the worst of it to enjoy the least benefit from an issue or be defeated in itvb (tr) to get the advantage over; defeat or beat[Old English wierrest; related to Old Frisian wersta, Old Saxon, Old High German wirsisto, Old Norse verstr]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014worst (w?rst) adj. superlative of bad and ill, adj. 1. bad or ill in the highest, greatest, or most extreme degree: the worst person. 2. most faulty or unsatisfactory: the worst paper submitted. 3. most unfavorable or injurious: the worst rating. 4. in the poorest condition: the worst house on the block. 5. most unpleasant, unattractive, or disagreeable: the worst personality I’ve ever known. 6. most lacking in skill; least skilled. n. 7. that which is worst. adv. 8. in the most evil, wicked, severe, or disadvantageous manner. 9. with the most severity, intensity, etc.; in the greatest degree. v.t. 10. to defeat; beat. Idioms: 1. at (the) worst, if the worst happens; under the worst conditions. 2. if worst comes to worst, if the very worst happens. 3. in the worst way, very much; extremely: to want something in the worst way. [before 900; Middle English worste, Old English wyr(re)sta, wer(re)sta (adj. and adv.), c. Old Norse verstr] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.worstWorst is the superlative form of bad and the usual superlative form of badly.