Definite and Undefined

Definite

Definite adjective - Having distinct or certain limits.
Usage example: there should be a definite scope to your paper on the campaign for women's rights because you obviously cannot cover the whole history in five pages

Undefined is an antonym for definite in topics: exact, fixed.

Undefined

Undefined adjective - Not seen or understood clearly.
Usage example: plagued by undefined worries that kept her awake at night

Definite is an antonym for undefined in topics: infinite, vague.

Both words in one sentence

  • Noodle Implements An Incident is a single event, definite, while Implements can mean both "ongoing" and "tools", so it is more undefined and open.
Cite this Source
Undefined and Definite. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/definite/undefined
Definite & Undefined. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/definite/undefined>.
Undefined or Definite. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/definite/undefined.
Google Ngram Viewer shows how "definite" and "undefined" have occurred on timeline