Meaning ofsmarten upin English

Verb

1. to become more intelligent; aware
   After reading the book, she began to smarten up and understand complex concepts.
2. to make someone more intelligent; perceptive
   The teacher tried to smarten up her students by assigning them challenging projects.
3. to dress more stylishly; improve appearance
   He decided to smarten up for the job interview by wearing a suit and tie.