Also spelled slily

US /slaɪ/
adj Freq #8739

Meanings

  1. 1
    adj

    Done with, and marked by, artful and dexterous secrecy; subtle

    A sly trick.

  2. 2
    adj

    marked by skill in deception

  3. 3
    adj

    Artfully cunning; secretly mischievous; wily.

  4. 4
    adj

    Dexterous in performing an action, so as to escape notice

Thesaurus

Synonyms
2 adj · marked by skill in deception cunning
4 adj · dexterous in performing an... cautiousnimbleshrewdskillful
Word family
Forms slyishslylyslyness
Derived forms slinesssly-grogslybootsslyishslynessunsly

Etymology

From Middle English sly, sley, sleigh, sleiȝ, from Old Norse slǿgr (“sly, cunning”, literally “capable of hitting or striking”), from Proto-Germanic *slōgiz (“lively, agile, cunning, sly, striking”), from Proto-Indo-European *slak- (“to hit, throw”). Cognate with Icelandic slægur (“crafty, sly”), Norwegian Nynorsk sløg (“sly”). Related to sleight, slay. In all likelihood, however, unrelated with Saterland Frisian slau (“sly, crafty”), Dutch sluw (“sly, cunning”), Low German slu (“sly, cunning”), German schlau (“clever, crafty”). Doublet of sleight and slöjd

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