1. superlative form of smart: having the greatest intelligence or mental ability
2. superlative form of smart: most stylish, fashionable, or well-dressed in appearance
3. superlative form of smart: most quick-witted or clever in behavior or response

Examples

• She was the smartest student in her graduating class.
• The smartest move would be to save money before making any big purchases.
• He always wore the smartest suits to business meetings.
• That was the smartest comeback I’ve ever heard.
• The smartest phone on the market has incredible features.
• She made the smartest decision by accepting the job offer.
• He looked the smartest of all the wedding guests.