adjectives
made slick by e.g. ice or grease
"sidewalks slick with ice"; "roads are slickest when rain has just started and hasn't had time to wash away the oil"
is similar to
causing or tending to cause things to slip or slide
"slippery sidewalks"; "a slippery bar of soap"; "the streets are still slippy from the rain"
having only superficial plausibility
"glib promises"; "a slick commercial"
having a smooth, gleaming surface reflecting light
"glossy auburn hair"; "satiny gardenia petals"; "sleek black fur"; "silken eyelashes"; "silky skin"; "a silklike fabric"; "slick seals and otters"
marked by skill in deception
"cunning men often pass for wise"; "deep political machinations"; "a foxy scheme"; "a slick evasive answer"; "sly as a fox"; "tricky Dick"; "a wily old attorney"
crafty,
cunning,
dodgy,
foxy,
guileful,
knavish,
slick,
sly,
tricksy,
tricky,
wily