Curious
Curious adjective - Interested in what is not one's own business.
Undefinable and curious are semantically related. In some cases you can use "Undefinable" instead an adjective "Curious".
Undefinable
Undefinable adjective - Not capable of being precisely or readily described; not easily put into words.
Curious and undefinable are semantically related. Sometimes you can use "Curious" instead an adjective "Undefinable".
Mutual synonyms
Both words in one sentence
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This led to a curious incident some where Westerners assumed that the fighting game Hisoutensoku was actually it's translation "Undefined Natural Law/Undefinable by Natural Law" because the latter is such a ZUN-worthy title.
Source: Word Salad Title
Cite this Source
Undefinable and Curious. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/curious/undefinable
Curious & Undefinable. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/curious/undefinable>.
Undefinable or Curious. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/curious/undefinable.
Google Ngram Viewer shows how "curious" and "undefinable" have occurred on timeline