are letters that make 'Mr'
are words within 'Mr'
Mrs, MRD, BMR, NMR, MRI
are words created by adding a letter to 'Mr'
1 possible definitions for 'Mr'
Under this definition, mr is a noun and has the following properties:
have the same meaning as 'Mr'
'Mr' can be a type of title, title of respect, form of address.