take leave of one's senses

== English == === Pronunciation === === Verb === take leave of one's senses (third-person singular simple present takes leave of one's senses, present participle taking leave of one's senses, simple past took leave of one's senses, past participle taken leave of one's senses) (idiomatic) To go crazy; to stop behaving rationally. 2007, HRH The Prince of Wales, The Elements of Organic Gardening, Kales Press, page 7: One of the great difficulties associated with the adoption of organic or, perhaps more appropriately, sustainable principles at the time I started turned out to be convincing others that you had not taken complete leave of your senses.