oldman   
anti-dahy
an old man. Contemptuous if used in Imerina. [Richardson 1885]
an old man (disrespectful) [Hallanger 1973]
lahiantitra
an old man [Richardson 1885]
nahoda
a chieftain, a captain of a vessel; an old man; a title of respect. (prov.) [swa. Nahoza.] [Richardson 1885]