1) Adlai 2) Beginner 3) Cub 4) Greenhorn 5) Newbie 6) Novice 7) Tiro 8) Tyro 1) American online magazine 2) Annual award recipient 3) Baseball hopeful 4) Beginner 5) Callow recruit 6) Dugout newcomer 7) First-season athlete 8) First-year 9) First-year athlete 10) First-year player 11) Freshman player 12) Green hand 13) Green man 14) Greenhorn 15) Gridiron greenhorn 16) Inexperienced one 
A rookie is a person in his or her first year of a sport, or someone who is new to a profession, training or activity such as a rookie police officer, rookie pilot, a recruit, or occasionally a freshman. ==Throughout sports== In some sports there are traditions in which rookies must do things or tricks are played on them. Some examples in baseball...[magazine] Rookie is an American online magazine for teenage girls created by fashion blogger Tavi Gevinson. Rookie publishes art and writing from a wide variety of contributors, including journalists, celebrities, and the magazine`s readers. The subject matter ranges from pop culture and fashion to adolescent social issues and feminism. Ro...
[Basketball] a player in his first NBA season.[Football] a first-year player in the NFL.
Rookie (rooky) is slang for a new recruit or novice in a profession.
See Trainee.
A baseball player playing his first season in Major League Baseball.