Related Clues:

• Smarmy smile
• Simper
• [I told you so!]
• Gloating look
• Hardly an ingratiating grin
• Know-it-all's expression
• Unsportsmanlike look
• Sly smile
• A self-satisfied smile
• Conceited smile
• Obnoxious grin
• Irritating smile
• Appear smug
• Haughty look
• Smile that's not a warm smile