Erratic and Undependable

Erratic

Erratic adjective - Likely to perform unpredictably.
Usage example: erratic winds are the bane of a sailor

Undependable is a synonym for erratic in unpredictable topic. In some cases you can use "Undependable" instead an adjective "Erratic".

Nearby Word: errant

Undependable

Undependable adjective - Not worthy of reliance or trust.
Usage example: an undependable assistant

Erratic is a synonym for undependable in irresponsible topic. You can use "Erratic" instead an adjective "Undependable".
Cite this Source
Undependable and Erratic. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/erratic/undependable
Erratic & Undependable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/erratic/undependable>.
Undependable or Erratic. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/erratic/undependable.
Google Ngram Viewer shows how "erratic" and "undependable" have occurred on timeline