the.com/newbie

means A person new to an activity, job, or community who hasn't yet learned the ropes.

from Likely built from 'new' plus the informal '-ie' suffix that English loves tacking onto things to make them diminutive or casual (think 'softie,' 'junkie'). It surfaces in print in the 20th century, with military and British slang (where 'new boy' and similar terms were already common) often credited as an early breeding ground before it spread into general use and later exploded with internet and gaming culture, where every newcomer needed a word — and 'newbie' was waiting.