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sly

sly

31 4.9
Being clever in a secret way to trick others
  • adjective
  • /slaɪ/
translation icon : astuto
  • The mailman smiled at him, a slow, sly, insinuating smile that made Billy's blood run cold.
  • sly humor
  • sly look

Before he exits, he gives Jackie a sly smile and a wink.

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Examples

  • There are only two types of people that are as sly as the fox.

  • " You see," he remarked with a sly smile, "now they can't lie to us about the price anymore."

    Academic text (1998)
  • What a sly old fellow you are.

  • If you had asked me that in the first place, instead of being sly, then I would have explained it to you.

  • "In other words," he had whispered in his sly voice, "that woman has no idea who you are."

    Fiction book (1992)
  • You're a sly dog, Kiki.

  • An old man, wizened and sly, was sitting on a bench in the shade, smoking up a storm.

    Academic text (2007)
  • Turns out she was watchful and sly, with a bawdy sense of humor.

    Academic text (2010)
  • After confirming the child's origins, the sly king entrusted the boy with a letter for the queen.

  • The clever thief was very sly in planning the heist without raising suspicion.

Synonyms

sneaky
vssly
101 4.4

Acting in a secret way to avoid being noticed or to get an advantage

is less only about being hidden and more about indirect clever methods
devious
vssly
51 6.4

Acting in a dishonest or tricky way to get what you want

is more about quiet secretiveness than broad dishonesty or insincerity
crafty
vssly
47 4.5

Good at using clever tricks to get what you want

is more secretive and indirect in achieving the same aims
cunning
vssly
43 5.1

Clever at getting things by tricking people

is more quietly secretive and indirect rather than openly tricky
tricky
vssly
26 4.5

Uses lies or clever plans to get what they want

is more narrowly secretive and focused on indirect achievement
artful
vssly
20 6.9

Clever in a sly or secret way to hide what you really mean

is more secretive and aimed at hidden achievement rather than craft alone
wily
vssly
19 6.9

A person or animal that uses clever tricks to get what they want

is more focused on secretive indirect methods rather than plain cleverness
weaselly
vssly
  • Informal
4 8.4

A person who acts sneaky and dishonest to avoid clear answers

is more neutral in tone, focusing on secret cleverness rather than nastiness
dodgy
vssly
  • UK
3 8.8

Clever in a dishonest way to trick people

is more about quiet indirect cunning than risky evasiveness
foxy
vssly
3 8.2

Being clever at secretly tricking people for personal gain

is more about secret, indirect methods rather than charming deception
knavish
vssly
  • Offensive
1 9.9

Acting in a way that tricks people to get what you want

is more modernly secretive and indirect rather than archaic trickery
tricksy
vssly
1 9.1

Behaving in a sly way that tries to fool people

is more seriously secretive and less playful in its deception
guileful
vssly
1 8.9

A person or plan that tricks people to get what they want

is broader, covering secretive indirect methods beyond deliberate misleading
sleekit
vssly
  • Offensive
9.9

Acting in a secret, sly way to try to trick people

is the general term for secretive cleverness rather than this regional usage

Antonyms

1.0

Truthful and fair, not cheating or lying

Someone who is honest and direct, not hiding anything

Idioms

on the sly
  • Informal
9 7.8

In a secret way so other people do not know

Compounds

1 6.1

A person who is clever and uses tricks to get what they want

How Cunning

devious
51 6.4
crafty
47 4.5
sly
31 4.9
shrewd
50 4.7
clever
573 1.7

Surface Forms

sly positive
slyer comparative
slyest superlative

Etymology

The word sly comes from an old word meaning 'secret' and 'clever', used for someone who plans quiet 'tricks'. A helpful way to remember it is to imagine a fox that slips away silently to trick people, which is why sly means being clever in a quiet, secret way.