Synonyms of slippery in English:

slippery


See definition of slippery

adjective

1‘heavy rain had made the roads slippery’

SYNONYMS
slithery, greasy, oily, icy, glassy, smooth, slick
slimy, wet
informal slippy, skiddy
rare lubricious
ANTONYMS

dry, rough

2‘Martin's a slippery customer’

SYNONYMS
evasive, unreliable, unpredictable, hard to pin down
devious, crafty, cunning, wily, tricky, artful, guileful, slick, sly, sneaky, scheming, contriving, untrustworthy, deceitful, deceptive, duplicitous, dishonest, treacherous, false, two-faced, Janus-faced
North American snide
informal shady, shifty, foxy, iffy
British informal dodgy
Australian, New Zealand informal shonky
ANTONYMS

open, reliable, trustworthy