Smarten (verb)

1. To make or become neat, trim, or smart in appearance.
2. To make or become more intelligent or able.

Origin:

The word "smarten" is believed to have originated from the middle english word "smerten" meaning "to make smart or sharp".

Examples:

1. She smartened herself up before the interview.
2. He smartened his tie before going to the meeting.
3. He smartened up his act before the big presentation.
4. She smartened the edges of the paper with a ruler.
5. She smartened up her wardrobe and landed a better job.