An inexperienced recruit, especially in the police or armed forces. / A novice.

non-professional; amateur

plural of rookie

full of rooks. / misty; gloomy. / (UK, slang, obsolete) rascally, rakish, scampish.

(trading cards) A sports card that is the first to feature an athlete after that athlete has participated in the highest level of competition within his or her sport.

plural of rookie card

(slang, humorous) Low numbers or a small amount of something, especially seen as signaling one's inexperience or naïveté.

Characteristic of a rookie; amateurish, naive.

superlative form of rookie: most rookie

comparative form of rookie: more rookie