b, f, r, i, u, y are letters that make 'rubify'
rub, Bi, Ru are words within 'rubify'
1 possible definitions for 'rubify'
Under this definition, rubify is a verb and has the following properties:
'rubify' can be a type of redden.
rubric is a type of rubify.
crimson, ruby, deep red are derivatives of 'rubify'.