Other forms: newcomers
When you show up at your first meeting of the local swim club and you're the only one who didn't bring a towel, it may be because you're a newcomer, or someone who's new at participating in a particular group.
When you're a newcomer, you're an outsider just joining an activity or group. There are a lot of great words that have the same meaning as newcomer, like neophyte, rookie, and Johnny-come-lately. One popular slang term for newcomer is newbie, which is often shortened on the Internet to noob.
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