SLY (adjective)
  The adjective SLY has 1 sense:

1. marked by skill in deception

  Familiarity information: SLY used as an adjective is very rare.

SLY (adjective)

Sense 1

Meaning:

Marked by skill in deception

Synonyms:

crafty; tricksy; sly; knavish; guileful; foxy; wily; dodgy; cunning; tricky; slick

Context examples:

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

Similar:

artful (marked by skill in achieving a desired end especially with cunning or craft)

Internet Slang: The definition of SLY is "Still Love You"