Synonyms of sly in English:

sly


See definition of sly

adjective

1‘she's getting sly in her old age’

SYNONYMS

cunning, crafty, clever, wily, artful, guileful, tricky, conniving, scheming, devious, designing, deceitful, duplicitous, dishonest, disingenuous, underhand, sneaky, untrustworthy

manipulative, calculating, Machiavellian

informal foxy, shifty

British informal fly

NZ Australian informal shonky

South African informal slim

archaic subtle

rare carny

ANTONYMS

honest, artless

2‘he gave her a sly grin’

SYNONYMS

roguish, mischievous, impish, puckish, playful, teasing, naughty, wicked, waggish

arch, knowing

Northern English Scottish informal pawky

3‘she took a sly sip of water’

SYNONYMS

surreptitious, furtive, stealthy, covert, secret