Synonyms for Sly

Synonyms starting with letter I

• insidious

  cunning, artful, crafty
• impish

  roguish, clever, mischievous
• ingenious

  artful, crafty, clever
• intriguing

  clever, cunning
• 

  intelligent

  crafty, shrewd
• insincere
• indirect
• illusory

  clever
• insightful
• immoral
• inventive
• ironical
• imaginative
• inside
• incognito
• in ambush
• in the know
• illegal
• improper
• impostrous
• imposturous
• indecent
• indecorous
• intangible
• innovative
• innovatory
• innovational
• ill
• injurious
• irksome
• ill-behaved
• illicit
• insinuating

  artful
• ingratiating
• in holes and corners
• ironic
• impassive
• inelaborate
• insipid
• illegitimate