greenhorn
UK: ˈɡriːnhɔːn | US: ˈɡriːnhɔːrn
n. an inexperienced or naive person, especially a newcomer to a particular activity or environment
n. (historical) a young ox or cow with newly grown horns
The term "greenhorn" originated in the 15th century, combining "green" (symbolizing youth or inexperience) and "horn" (referring to the horns of a young animal). Initially, it described a young ox with new horns, later metaphorically extending to humans to denote newcomers or novices lacking experience. The logic reflects the association of "green" with immaturity and "horn" with early-stage growth.
The seasoned sailors laughed at the greenhorn who couldn’t tie a proper knot.
As a greenhorn in the tech industry, she was eager to learn from her colleagues.
The cowboy patiently taught the greenhorn how to handle the cattle.
Don’t expect too much from him—he’s still a greenhorn in this field.
The term "greenhorn" is often used humorously to tease someone new to a job.