Letters that make rub up
b, p, r, u are letters that make 'rub up'
grub up is a word created by adding a letter to 'rub up'
1 possible definitions for 'rub up'
Under this definition, rub up is a noun and has the following properties:
'rub up' can be a region of United Kingdom, UK, U.K., Britain, United Kingdom of Great Britain and Northern Ireland, Great Britain
"I need a rub up on my Latin"