Where does “flashlessly” come from?

flashlessly (English) comes from English flashless, from English less, from Middle English les, from Old English lēas, from Proto-Germanic *laus.

flashlessly (English): In a flashless manner; without flash

Definitions

  1. In a flashless manner; without flash

Ancestry of “flashlessly”, step by step

flashlessly traces back through two separate lines of ancestry.

via English flashless

StepLanguageWordMeaning
1EnglishflashlessNot fitted with a flash; Not generating a flash...
2EnglishlessTo a smaller extent or degree; comparative form...
3Middle Englishlesfalse; lying; deceptive; falsehood; a lie
4Old Englishlēasfalse, lax; false, void, loose; devoid of, loose...
5Proto-Germanic*laus

via English ly

StepLanguageWordMeaning
1EnglishlyAbbreviation of light-year
2VietnameselyAlternative spelling of li
Every word from Proto-Germanic *laus