Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb smarten_up
2 senses of smarten up
Sense 1
spruce up, spruce, titivate, tittivate, smarten up, slick up, spiff up -- (make neat, smart, or trim; "Spruce up your house for Spring"; "titivate the child")
=> fancify, beautify, embellish, prettify -- (make more beautiful)
Sense 2
spruce up, spruce, slick up, smarten up -- (dress and groom with particular care, as for a special occasion; "He spruced up for the party")
=> groom, neaten -- (care for one's external appearance; "He is always well-groomed")