Other forms: rookies
A rookie is somebody in their first season at a job or a sport. A rookie mistake, the rookie quarterback, rookie of the year.
It is American and belongs to sport and to policing above all. A rookie mistake is one only inexperience explains, and the phrase is affectionate when said of yourself and less so of others. It probably comes from recruit, worn down in speech.
1nounrookieSomebody in their first season at a job or a sport.
“The rookie cop was nervous on his first night patrol.”
rookie is a beginner.
Probably an altered form of recruit, worn down in speech, though a link with rook, meaning to cheat a novice, has also been proposed.
Irish
rúca — an inexperienced person
Dutch
broekie
English, today
rookie
Built from
Thought to be an alteration of recruit ie, or from rook + -ie. Another possible origin is Dutch broekie (short for broekvent (“a boy still in short trousers”)), a common term for a shipmate. Also suggested is Irish rúca (“an inexperienced person”).
Etymology from Wiktionary, CC BY-SA