The term 'Hindu Sir' can be broken down into two crossword solutions: Babu (4 letters) and SAHIB (5 letters). Babu is a term used in India to refer to a person of high social status, usually a man. It is derived from the Sanskrit word 'babhru, ' which means 'BROWN' or 'TAWNY.' SAHIB is an honorific title used in India to refer to a man of high social status, usually a British man. It is derived from the Persian word 'SAHIB, ' which means 'MASTER' or 'LORD.'