Where does “slyly” come from?

Slyly comes from Middle English sleighly, formed from Middle English sleigh and the suffix Middle English -ly (from Old English -līċ, from Proto-Germanic -līkaz), ultimately deriving from Proto-Indo-European roots slak- and līg-.

slyly (English): In a sly manner, cunningly

Definitions

  1. In a sly manner, cunningly

Ancestry of “slyly”, step by step

slyly traces back through two separate lines of ancestry.

via English sly

StepLanguageWordMeaning
1EnglishslyArtfully cunning; secretly mischievous; wily;...
2Middle EnglishslyJudicious, considered, shrewd; having or...
3Old Norseslǿgrcrafty, cunning, sly
4Proto-Germanicslōgizable to strike; sly, cunning, clever
5Proto-Indo-Europeanslak-to hit; strike; to hit, strike, throw; to hit,...

via Middle English sleighly

StepLanguageWordMeaning
1Middle EnglishsleighlyJudiciously, consideredly, shrewdly; in a wise...
Every word from Proto-Indo-European slak-Every word from Proto-Germanic slōgizEvery word from Old Norse slǿgr
slyly — Etymology, Origin & Word History | Etymology Explorer