sly

[ slahy ]
/ slaɪ /

adjective, sly·er, sly·est.

cunning or wily: sly as a fox.
stealthy, insidious, or secret.
playfully artful, mischievous, or roguish: sly humor.

Idioms for sly

    on the sly, secretly; furtively: a tryst on the sly.

Origin of sly

1150–1200; Middle English sly, sley, from Old Norse slœgr “sly, cunning” (originally “able to strike, able to slay”); see slay

OTHER WORDS FROM sly

Example sentences from the Web for sly

British Dictionary definitions for sly

sly
/ (slaɪ) /

adjective slyer, slyest, slier or sliest

crafty; artful a sly dodge
insidious; furtive a sly manner
playfully mischievous; roguish sly humour

noun

on the sly in a secretive manner

Derived forms of sly

slyly or slily, adverb slyness, noun

Word Origin for sly

C12: from Old Norse slǣgr clever, literally: able to strike, from slā to slay

Idioms and Phrases with sly

sly

see on the sly.