Idioms

    at worst, if the worst happens; under the worst conditions: He will be expelled from school, at worst.Also at the worst.
    get the worst of something, to be defeated by; lose: to get the worst of a fight.
    if worst comes to worst, if the very worst happens: If worst comes to worst, we still have some money in reserve.
    in the worst way, Informal. in an extreme degree; very much: She wanted a new robe for Christmas in the worst way.Also the worst way.

Origin of worst

before 900; Middle English worste (adj., adv., and noun), Old English wur(re)sta, wyr(re)st, wer(re)sta (adj. and adv.); cognate with Old Norse verstr; see worse, -est1
Can be confusedworst wurst
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for if worst comes to worst

worst

adjective

the superlative of bad 1

adverb

in the most extreme or bad manner or degree
least well, suitably, or acceptably
(in combination) in or to the smallest degree or extent; leastworst-loved

noun

the worst the least good or most inferior person, thing, or part in a group, narrative, etc
(often preceded by at) the most poor, unpleasant, or unskilled quality or conditiontelevision is at its worst these days
the greatest amount of damage or wickedness of which a person or group is capablethe invaders came and did their worst
the weakest effort or poorest achievement that a person or group is capable of makingthe applicant did his worst at the test because he did not want the job
the worst
  1. in the least favourable interpretation or view
  2. under the least favourable conditions
if the worst comes to the worst if all the more desirable alternatives become impossible or if the worst possible thing happens
come off worst or get the worst of it to enjoy the least benefit from an issue or be defeated in it

verb

(tr) to get the advantage over; defeat or beat

Word Origin for worst

Old English wierrest; related to Old Frisian wersta, Old Saxon, Old High German wirsisto, Old Norse verstr
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for if worst comes to worst

worst

adj.

Old English wyrresta, from Proto-Germanic *wers-ista- (cf. Old Saxon wirsista, Old Norse verstr, Old Frisian wersta, Old High German wirsisto), superlative of PIE *wers- "to confuse, mix up" (see worse). Phrase in the worst way (1839) is from American English sense of "most severely."

worst

v.

"damage, inflict loss upon," c.1600, from worst (adj.). Related: Worsted; worsting.

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with if worst comes to worst

if worst comes to worst

Also, if worse comes to worst. In the least favorable situation, if the worst possible outcome occurs. For example, If worst comes to worst and the budget is not approved, the government will shut down, or Go ahead and go to school with a cold; if worse comes to worst the teacher will send you home. This expression is nearly always followed by a solution. [Late 1500s]

worst

see at worst; get (have) the worst of it; if worst comes to worst; in the worst way. Also see under worse.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.