Erratic
Unthought
Unthought adjective - So unexpected as to have not been imagined.
Erratic and unthought are semantically related in unintentional topic. Sometimes you can use "Erratic" instead an adjective "Unthought", if it concerns topics such as not planned.
Cite this Source
Unthought and Erratic. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/erratic/unthought
Erratic & Unthought. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/erratic/unthought>.
Unthought or Erratic. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/erratic/unthought.
Google Ngram Viewer shows how "erratic" and "unthought" have occurred on timeline