Erratic
Erratic adjective - Lacking a definite plan, purpose, or pattern.
Functional and erratic are semantically related. In some cases you can use "Functional" instead an adjective "Erratic".
Nearby Word: errant
Functional
Functional adjective - Being in effective operation.
Erratic and functional are semantically related. Sometimes you can use "Erratic" instead an adjective "Functional".
Both words in one sentence
- One of the protagonists, Nicola, is a programmer employed by the city to keep the erratic technology functional.
Source: AI Is A Crapshoot / Literature -
Beth also seems to have been this at one point, being functional enough that her colleagues failed to notice anything was wrong, but by the time of the Maggie Chen shooting this seems to have evaporated, as her behaviour had become increasingly erratic.
Source: Series / Orphan Black
Cite this Source
Functional and Erratic. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/erratic/functional
Erratic & Functional. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/erratic/functional>.
Functional or Erratic. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/erratic/functional.
Google Ngram Viewer shows how "erratic" and "functional" have occurred on timeline