Arcane
Arcane adjective - Difficult for one of ordinary knowledge or intelligence to understand.
Secret is a synonym for arcane in mysterious topic. In some cases you can use "Secret" instead an adjective "Arcane", when it comes to topics like property, restricted, hidden.
Secret
Secret adjective - Undertaken or done so as to escape being observed or known by others.
Arcane is a synonym for secret in property topic. You can use "Arcane" instead an adjective "Secret", if it concerns topics such as cryptic, restricted, hidden, mysterious.
Mutual synonyms
Both words in one sentence
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Secret Path: Arcane has a hidden elevator to the laboraties below his mansion, which accessible by turning a certain candlestick on the wall.
Source: Film / The Return of Swamp Thing -
All labor in secret for fear of the sleeping tiger—magick may be powerful, but all the forces of the arcane aren't worth much compared to the panicked masses on a witch hunt.
Source: Tabletop Game / Unknown Armies - In particular, Denis Arilan and Duncan McLain have to resolve a basic personal conflict between their arcane abilities and their vocations; they both choose to be priests, but Denis chooses to keep his secret as far as possible, while Duncan eventually chooses to live openly as a Deryni priest.
Cite this Source
Secret and Arcane. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/arcane/secret
Arcane & Secret. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/arcane/secret>.
Secret or Arcane. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/arcane/secret.
Google Ngram Viewer shows how "arcane" and "secret" have occurred on timeline