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
çekim: karşılaştırma īnsānior · üstünlük īnsānissimus
köken: Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in- Proto-Italic *sānos Latin sānus Latin īnsānus From in- + sānus (“healthy, sound”).
aile: īnsāniō, īnsānitās
aristophontes: Quid tu autem? Etiam huic credis? hegio: Quid ego credam huic? aristophontes: Insanum esse me?
köken: From Middle Georgian გიჟი (giži). An Iranian borrowing, however, it being a borrowing from Middle Armenian գիժ (giž, “crazy, mad”) is also sensible. See Persian گیج (gij) for more.
köken: From Proto-Malayo-Polynesian *baliw (“return”), from Proto-Austronesian *baliw (“return”). Compare Central Bikol baliw, Cebuano baliw, and Maranao baloy. Doublet of ibayo.
köken: Etymology tree Esperanto freneza Proto-Indo-European *-tós Proto-Italic *-tosder.? Late Latin -ittus Old French -et Middle French -et French -etbor. ▲ Late Latin -ittus Italian -ettobor. Esperanto -et- Esperanto frenezeta From freneza (“crazy”) + -et- (diminutive).
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”).