Amateurish and Nonprofessional

Amateurish

Amateurish adjective - Lacking or showing a lack of expert skill.
Usage example: that's an amateurish wallpapering job—the pattern doesn't match at the seams

Nonprofessional and amateurish are semantically related in ability topic. In some cases you can use "Nonprofessional" instead an adjective "Amateurish".

Nonprofessional

Nonprofessional adjective - Being such only for recreation.
Usage example: racing stunts that nonprofessional drivers should not attempt to duplicate

Amateurish and nonprofessional are semantically related in ability topic. You can use "Amateurish" instead an adjective "Nonprofessional".
Cite this Source
Nonprofessional and Amateurish. (2016). Retrieved 2026, July 27, from https://thesaurus.plus/related/amateurish/nonprofessional
Amateurish & Nonprofessional. N.p., 2016. Web. 27 Jul. 2026. <https://thesaurus.plus/related/amateurish/nonprofessional>.
Nonprofessional or Amateurish. 2016. Accessed July 27, 2026. https://thesaurus.plus/related/amateurish/nonprofessional.
Google Ngram Viewer shows how "amateurish" and "nonprofessional" have occurred on timeline