Robber comes from Middle English robbere, from Old French robere, from rober ('to rob, plunder'), of Germanic origin, from Proto-Germanic *raubōną ('to rob, steal'). The historical chain includes Old French rober and Proto-Germanic *raubōną. Older glosses in the chain include "to rob, plunder" and "to rob, steal", which help explain the semantic range of the modern word. Morphologically, robber is best read as borrowing, yielding an English noun shaped by both form history and later usage. In current English it functions as a noun, with the sense "a person who steals from another by force or threat". related forms include rob, robbery, and robbing. The result is an English noun whose etymology preserves the older forms while supporting the word's specialized modern meaning.