Unreliable and Unsure

Unreliable

Unreliable adjective - Not worthy of reliance or trust.

Unsure is a synonym for unreliable in unstable topic. In some cases you can use "Unsure" instead an adjective "Unreliable", when it comes to topics like uncertain, undependable, not true.

Nearby Words: unreliability, unreliably

Unsure

Unsure adjective - Not feeling sure about the truth, wisdom, or trustworthiness of someone or something.

Unreliable is a synonym for unsure in doubtful topic. You can use "Unreliable" instead an adjective "Unsure", if it concerns topics such as unstable, uncertain, undependable.
Cite this Source
Unsure and Unreliable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/unreliable/unsure
Unreliable & Unsure. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/unreliable/unsure>.
Unsure or Unreliable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/unreliable/unsure.
Google Ngram Viewer shows how "unreliable" and "unsure" have occurred on timeline