" temerity "

[Noun]  | "te*mer*i*ty" | \ tə-ˈmer-ə-tē \

1: unreasonable or foolhardy contempt of danger or opposition : rashness, recklessness

2: a rash or reckless act

Origin: 15th century ;

 Middle English temeryte, borrowed from Latin temeritāt- temeritās, from temere "blindly, recklessly, haphazardly" + -itāt- -itās {see: |-ity|-ity}; temere going back to adverbialized locative singular of a noun *temes- "darkness," going back to Indo-European *temH-es-, whence also Sanskrit tamas- "darkness, gloom," Avestan tǝmah-, and, from the base *temH-, Lithuanian témsta, témti "to become dark," tamsà "darkness," tim͂sras "dark red (of a horse), sorrel," Old Church Slavic tĭma "darkness," tĭmĭnŭ "dark, gloomy," and from a *-ro- adjectival derivative Sanskrit tamra- "darkening, oppressive," Germanic *þemra- "darkness," whence Old High German demar "dusk, twilight";

  * Note : See also {tenebrae|Tenebrae}.;

[Noun]  | "temerity"