Sir - A respectable addressing, perhaps indicating a socio-economic and perhaps someone who has been honored for his or achievement in field of Science, Mathematics, Politics, Public Services, Sports, Military Services, Arts and Literature, etc. - besides the usual respectful addressing in classical, Victorian and modern English.
sR(i) - Something that has "slithered", or become "famous" by the act, all over the space and time, an associated with God, in terms of opulence of wealth, beauty, power and intelligence. There is one rule which says Cerberal "Ri" becomes "ir" with Semi Vowel "r", before adding "a", and the constant "r", also a Semi Vowel, is assumed to not have the built in "a' sound.