greenhorn

Newbie is a synonym of greenhorn.

As nouns the difference between greenhorn and newbie

is that greenhorn is an inexperienced person; a novice, beginner or newcomer while newbie is a newcomer, someone new to something.

As nouns the difference between rookie and greenhorn

is that rookie is an inexperienced recruit, especially in the police or armed forces while greenhorn is an inexperienced person; a novice, beginner or newcomer.

As an adjective rookie

is non-professional; amateur.

As nouns the difference between upstart and greenhorn

is that upstart is one who has suddenly gained wealth, power, or other prominence, but either has not received social acceptance or has become arrogant or presumptuous while greenhorn is (chiefly|us) an inexperienced person; a novice, beginner or newcomer.

As an adjective upstart

is self-important and presumptuous.

As a verb upstart

is to rise suddenly, to spring.

Greenhorn is a synonym of amateur.

As nouns the difference between amateur and greenhorn

is that amateur is a lover {{term|of}} something while greenhorn is an inexperienced person; a novice, beginner or newcomer.

As an adjective amateur

is non-professional.

is likely misspelled.

has no English definition.

As a noun greenhorn

is an inexperienced person; a novice, beginner or newcomer.

As nouns the difference between taxonomy and greenhorn

is that taxonomy is the science or the technique used to make a classification while greenhorn is an inexperienced person; a novice, beginner or newcomer.