Thoughtless
Thoughtless adjective - Showing a lack of manners or consideration for others.
Undependable and thoughtless are semantically related. In some cases you can use "Undependable" instead an adjective "Thoughtless".
Undependable
Undependable adjective - Not worthy of reliance or trust.
Thoughtless and undependable are semantically related. Sometimes you can use "Thoughtless" instead an adjective "Undependable".
Cite this Source
Undependable and Thoughtless. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/thoughtless/undependable
Thoughtless & Undependable. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/thoughtless/undependable>.
Undependable or Thoughtless. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/thoughtless/undependable.
Google Ngram Viewer shows how "thoughtless" and "undependable" have occurred on timeline