unreasonable, unthinking, messy, disordered · broken, shattered, in a poor state, appearing broken or messy
eş: めちゃくちゃ, むちゃくちゃ
köken: Uncertain. Perhaps reduplication of 滅茶 (mecha), which may in turn come from a notion of tea ceremony as a means to quiet a disordered or unreasonable state, or a shift from 無茶(むちゃ) (mucha) ("absurd"; superficially "without tea"). Alternately, it may be ideophonic, with sound-symbolic rather than referential origins; compare むちゃくちゃ (muchakucha), ぐちゃぐちゃ (guchagucha).
headfirst, headlong (precipitately, rashly) · headfirst, headlong (with the head first or down)
köken: From an unattested form *стромиголов(у), related to строми́ти (stromýty, “to insert, stick”) and голова́ (holová, “head”). Possibly ultimately from Old Church Slavonic стрьмоглавь (strĭmoglavĭ, “head down, headfirst, headlong”), whence Russian стремгла́в (stremgláv). Compare also Belarusian стрымгало́ў (strymhalów), Czech střemhlav.