Indeterminate and Undefined

Indeterminate

Indeterminate adjective - Not precisely determined or established; not fixed or known in advance.

Undefined is a synonym for indeterminate in uncertain topic. In some cases you can use "Undefined" instead an adjective "Indeterminate", when it comes to topics like undetermined. popular alternative

Undefined

Undefined adjective - Not seen or understood clearly.

Indeterminate is a synonym for undefined in vague topic. You can use "Indeterminate" instead an adjective "Undefined", if it concerns topics such as uncertain, unspecified. popular alternative
Cite this Source
Undefined and Indeterminate. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/indeterminate/undefined
Indeterminate & Undefined. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/indeterminate/undefined>.
Undefined or Indeterminate. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/indeterminate/undefined.
Google Ngram Viewer shows how "indeterminate" and "undefined" have occurred on timeline