Where does “thoughtlessly” come from?

Thoughtlessly derives from English thoughtless, formed from Old English thought plus the suffix -lēas meaning "without," ultimately from Proto-Germanic galīkaz and Proto-Indo-European roots meaning "lacking" and "together."

thoughtlessly (English): Done without thinking

Definitions

  1. Done without thinking

Ancestry of “thoughtlessly”, step by step

StepLanguageWordMeaning
1EnglishthoughtlessMarked by or showing lack of due thought or care;...
2English-less(something); without (something). Added usually to a noun to form an adjective signifying a lack of that noun
3Middle English-lesLacking (something); without (something)
4Turkish-lewith, shortened form of ile; by, shortened form...
5Turkishilewith; and
6Ottoman Turkishایلهby
7Old Anatolian Turkishاِیلَه
8Proto-Turkicbilewith, together, also
Every word from Proto-Turkic bile