Smart (adjective)

1. Having or showing a quick-witted intelligence.
2. Characterized by cleverness or originality of invention or construction.
3. Stylish and fashionable in appearance or dress.
4. Affectedly fashionable or elegant.
5. Having a sharp, biting quality.

Origin:

Middle english smerte, from old english scearp; akin to old high german scarpf sharp.

Examples:

1. She is a smart student, who always gets good grades.
2. The new smartphone has a smart design, with many innovative features.
3. He looked smart in his new suit and tie.
4. The restaurant has a smart atmosphere, with chic decor and fancy tableware.
5. The smart comments made by the comedian were hilarious.