Smarten up has 3 different meanings across 1 category:
Verb
Verb
1
make neat, smart, or trim
"Spruce up your house for Spring"
"titivate the child"
2
dress and groom with particular care, as for a special occasion
"He spruced up for the party"
3
To wear smart clothes and look more stylish
Example Sentences
"Spruce up your house for Spring"
verb
"titivate the child"
verb
"He spruced up for the party"
verb
Broader Terms (hypernyms)