To do up is to fasten something — or to repair and redecorate it. Buttons, or a whole house.
The fastening sense covers buttons, zips, laces and coats, and doing up your coat is what you are told before going out. The renovating sense is very British, and a house described as needing doing up is a project, with the noun a doer-upper for the property itself. It splits round an object. Undo is the opposite of the first sense only.
Practised in Phrasal Verbs, A Man Called Ove
First appears in chapter 4 of A Man Called Ove.
Practise this word