To smarten up is to make somebody or something look neater. Smarten up before the interview.
It is used of appearance and of premises alike, and both mean small improvements. To smarten up a shop front does more for trade than most advertising.
1phrasesmarten upTo make somebody or something look neater.
“A coat of paint would smarten up the whole terrace.”
smarten up is a phrase.
Practised in Phrasal Verbs