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1. noun Someone who is inexperienced at some sport, profession, or other activity. Sometimes used as a term of address. It was the first playoff game for the rookie, and he managed to score three runs with a home run in the very first inning. I can't believe they're making me take the rookie out on the beat today. Nice one, rookie. You just cost us a day's worth of work.
2. adjective Of, related to, or indicating a very inexperience person. The rookie officer was tasked with protecting the suspect while he was transferred to the county jail. I can't believe I let that error slip by me during testing. What a rookie mistake!
rookieand rooky (ˈrʊki)
1. n. a person new at something; a neophyte, especially a police officer or a ballplayer. The rookie tackled the old-time player and earned a lot of cheering and applause.
2. mod. new; inexperienced. Fred is a rookie first baseman for the home team.