köken: Past participle of the rarer verb bekloppen (“to hit on", "to percuss”), thus “insane as if beaten in the head”. Related to kloppen (“to hit”), the Central and German Low German form of klopfen (“to knock”).
aile: bekloppt sein, Bekloppte, Beklopptenschule, Bekloppter, Bist du bekloppt?, völlig bekloppt, völlig bekloppt sein
köken: Inherited from Old Anatolian Turkish دلو (delü), from Proto-Turkic *tēlbe (“mad, stupid”). Cognate with Turkish deli, Uzbek telba, Turkmen däli and telbe, Southern Altai тели (teli), Tatar тилбә (tilbä, “foolish person”), Chuvash тилӗр (tilĕr, “become enraged”) etc.
mad, crazy, insane, lunatic, bonkers, not sane, exhibiting unsoundness or disorder of mind, mentally deranged · whimsical, eccentric, quirky, bizarre, odd, given to quirks or idiosyncrasies, strange in a somewhat silly, manner · inconsiderate, thoughtless, unthoughtful, not considerate, showing lack of due thought or care for the other people
çekim: karşılaştırma däliräk · üstünlük iň däli
köken: From Proto-Turkic *tēlbe (“mad, crazy”). Cognate with Turkish deli, Azerbaijani dəli, Bashkir тиле (tile), Kazakh дәлду (däldu), Kyrgyz тели (teli), Uyghur تەلۋە (telwe) and Uzbek telba.
köken: From Middle Dutch geck (“madman”). Earlier origin uncertain, but perhaps from an imitative verb also found in Swedish gäcka (“to mock”). Cognate with German Geck, Jeck, English geek (see etymology there).
aile: gek als een deur, gek als een ui, gekke Henkie, gekkerd, gekkig, gekmakend, gekscheren, knettergek, stapelgek
köken: From Byzantine Greek τρελός (trelós), from Koine Greek τρηρός (trērós), from Ancient Greek τρήρων (trḗrōn). The chess sense is a semantic loan from French fou.
köken: From ne- (“not”) + bun (“sane”). The sense “bishop (chess piece)” is a semantic loan from French fou, from Spanish alfil, from Arabic الفيل (al-fīl, “elephant, chess bishop”).
çekim: karşılaştırma bolondabb · üstünlük legbolondabb
köken: Borrowed from a Slavic language. Compare Polish błąd (“mistake”), Russian блуд (blud, “fornication”), from Proto-Slavic *blǫdъ. Compare also unrelated German blöd.