Greenhorn is a slur used to describe Portuguese in a derogatory way. Derogatory term for Portugese. Often used when referring to those of Portugese descent who come from the Azores. Meaning stupid and backwards. More derogatory than the term "Portagee."
The word Greenhorn is a racial slur that has been used historically to degrade and dehumanize portuguese. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to portuguese. If you are unsure about whether or not it is appropriate to use the word Greenhorn, it is best to err on the side of caution and avoid using it in any situation.