Aper
Aper noun - A person who adopts the appearance or behavior of another especially in an obvious way.
Erratic and aper are semantically related. in mentally strange topic. In some cases you can use "Erratic" instead an adjective "Aper".
Cite this Source
Erratic and Aper. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/aper/erratic
Aper & Erratic. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/aper/erratic>.
Erratic or Aper. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/aper/erratic.
Google Ngram Viewer shows how "aper" and "erratic" have occurred on timeline