sly

Mischievously devious type

Sly describes someone who is clever in a cunning or deceptive way, often pursuing hidden motives while appearing innocent.

A sly smile or sly glance suggests knowing something others don't.

The word can be neutral or admiring when it describes shrewd resourcefulness, but more often implies sneakiness or manipulation.

She gave him a sly wink across the room.

On the sly means secretly or covertly: He was seeing someone on the sly.

cunning

crafty

Cleverly deceptive

  • wilySkilled at deception
  • shrewdPractically clever, perceptive
  • astuteMentally sharp, discerning

cagey · guileful · artful · scheming · conniving · subtle · slick · foxy · devious · calculating

trickster

fox

Cunning wild canine

  • rogueDishonest or uncontrolled agent
  • charlatanFaker claiming false expertise
  • conmanFraud who deceives for profit

swindler · deceiver · schemer · knave · rascal · scoundrel · impostor · cheat · hustler · grifter

deceptive

deceitful

Inclined to mislead others

treacherous · untrustworthy · dissembling · disingenuous · false · misleading · two-faced · sneaky · shifty · tricky

gaze

glance

Brief, casual look

  • smilePleased facial expression
  • winkBrief one-eyed closure
  • grinBroad, toothy smile

look · smirk · expression · sidelong · knowing · conspiratorial · suggestive · meaningful · sideways · askance

stealthy

furtive

Secretive and sly

undercover · clandestine · surreptitious · hidden · concealed · undetected · quiet · subtle · unobtrusive · inconspicuous

playful

mischievous

Playfully causing trouble

coy · arch · knowing · waggish · puckish · elfin · naughty · cheeky · flirtatious · coquettish

Categories
Opposites
honesty and transparency

slyhonest

Free from deception

straightforward · forthright · candid · frank · open

sophistication and cunning

slyguileless

Free from deceit

artless · ingenuous · naive · innocent · simple

demeanor and manner

slysolemn

Serious and dignified

grave · serious · earnest · sober · sedate

Phrases
Family

slyness, slyly, slyer, slyest, slyboots

Familiarity
Top 10,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G