What is "smarten up"

vb. 1 To wear smart clothes and look more stylish 2 To make, or to become, less stupid or naive

1. v. make neat, smart, or trim; "Spruce up your house for Spring"; "titivate the child" [syn: spruce up, spruce, titivate, tittivate, slick up, spiff up]

2. dress and groom with particular care, as for a special occasion; "He spruced up for the party" [syn: spruce up, spruce, slick up]