Rookie

A rookie meaning a raw recruit or novice was originally a British army colloquialism from the late 19th century, possibly deriving from the word recruit. An alternative etymology is that it may derive from the word rook meaning to cheat or deceive, presumably because raw recruits and novices find deceptive ways of not doing what they should be doing. The word was quickly adopted in America and its usage is more prevalent there in both military and sporting contexts, although Rudyard Kipling did use the word in Barrack-Room Ballads (1892).