The words for referring to people when we talk or write are added before or after like a prefix or a suffix, this is more eloquent in the classical language rather than the modern language.
For instance in the classical Tamil language, we use karar or nar or mar for profession and person. For instance, referring to a flower vendor, Pookaran (male), Pookari(female) is without any respect. The same, if we have to use respectable words would be Pookarar(male), Pookaramma(female). Similarly, we can use mar to make the words sound more honorable, akka(sister) will become akkamar and thambi(brother) will become thambimar.
In classical tamil, we also use 'Thiru' before a name, which is like sir or mr. To say Mr.SuN, in noble tamil, I would say, Thiru Sun avargal.