noun
a person who is new to or inexperienced at a particular activity
adjective
inexperienced or naive
-
The experienced team members were patient with the greenhorn who was just starting out in the industry.
-
Don't worry about making mistakes, we were all greenhorns at some point.
-
That greenhorn doesn't know the first thing about how things work around here.
-
She felt like a greenhorn in the world of online gaming, but she was determined to learn and improve.