1. the quality or state of being amateurish; lack of skill, professionalism, or polish characteristic of an amateur rather than a professional
Usage: uncountable noun; typically used as a criticism or negative descriptor

Examples

• The amateurishness of the production was evident in the poor lighting and awkward camera angles.
• Critics complained about the amateurishness of the band's first album.
• Despite the amateurishness of their efforts, the team showed genuine enthusiasm.
• The report suffered from amateurishness in its research methodology.
• She worked hard to overcome the amateurishness of her early paintings.
• The amateurishness of the website design hurt the company's credibility.