Meaning 1 · most common
fasten
To fasten or close something, such as buttons, zippers, or straps on clothes or bags.
Examples
It's cold outside, so make sure you do up your jacket.
A: Can you help me do up this bracelet?
B: Sure, just hold still for a second.
Common mistake
Not: Do up it before you go out.
Say: Do it up before you go out.
With a pronoun the object goes in the middle — 'do it up', never 'do up it'.
More on “fasten”Another example · Tell it apart · Goes with · Tip
Another example
Before leaving the house in winter, I always do up my coat to keep warm.
Tell it apart
Do your coat up, it's cold.
Undo the top button.
Goes with
- do up + fastening