at ones wits' end

== English == === Alternative forms === wit's end (US) === Noun === wits' end (plural wits' ends) (chiefly UK) The limit of one's sanity or mental capacity; the point of desperation. c. 1911, John Muir, in John Muir and Michael P. Branch, John Muir's Last Journey: South to the Amazon and East to Africa (2002 edition), page 138: Our dozen cabin passengers sorely put to wits' end to pass yesterday without cards in observance of the Sabbath. ==== Usage notes ==== The form wits' end is preferred nearly 3 to 1 in the UK (BNC). The form wit's end is preferred more than 2 to 1 in the US (COCA). ==== Translations ==== === See also === perplexed === Anagrams === detwins, windest