전문적인 기술이나 경험이 부족하여 서투르거나 아마추어 같은.
Lacking the skill, experience, or quality expected of a professional; done in an unskillful or incompetent way.
예문:
"The local production was criticized for its amateurish stage design."
"His amateurish attempt to fix the leak resulted in a flooded kitchen."
"The report was full of amateurish mistakes that a professional would have avoided."