Dark
Dark adjective - Being without light or without much light.
Ill-defined and dark are semantically related. In some cases you can use "Ill-defined" instead an adjective "Dark".
Ill-defined
Ill-defined adjective - Poorly stated or described.
Dark and ill-defined are semantically related. Sometimes you can use "Dark" instead an adjective phrase "Ill-defined".
Mutual synonyms
Both words in one sentence
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The Corruption: Dark Energon's properties are ill-defined at best, but it seems mostly able to subvert programming and cause machines to go haywire.
Cite this Source
Ill-defined and Dark. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/dark/ill-defined
Dark & Ill-defined. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/dark/ill-defined>.
Ill-defined or Dark. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/dark/ill-defined.