Where does “foolishly” come from?

Foolishly derives from Middle English -ly affixed to fool, which comes from Old English follis via Proto-Germanic -līkaz meaning "like," ultimately from Proto-Indo-European bʰelǵʰ- meaning "to swell."

foolishly (English): In a foolish manner; Without good judgment

Definitions

  1. In a foolish manner; Without good judgment

Ancestry of “foolishly”, step by step

StepLanguageWordMeaning
1EnglishfoolishLacking good sense or judgement; unwise;...
2Middle EnglishfolischFoolish, erroneous, ridiculous; Sinful,...
3Middle EnglishfolAlternative form of fole
4Old Frenchfolmad; insane; foolish; silly
5Latinfollisbellows; purse, sack, money bag; a small value...
6Proto-Indo-Europeanbʰelǵʰ-to swell
7Proto-Indo-Europeanbʰel-to sound; to speak, roar, bark; shiny, white; to...
8Proto-Indo-Europeanbʰōl-
Every word from Proto-Indo-European bʰōl-Every word from Proto-Indo-European bʰel-Every word from Proto-Indo-European bʰelǵʰ-