arcano
arcano is a Latin form of arcanus, meaning “secret, hidden; (arcana) secrets, mysteries”. It is the ablative singular neuter adjective.
Found 36 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Civili 1.19: … r subsidio venturum hortaturque eos, ne animo deficiant quaeque usui ad defendendum oppidum sint parent. Ipse arcano cum paucis familiaribus suis colloquitur consiliumque fugae Rapere constituit. Cum vultus Domitii cum oration …
Cicero, Letters to Atticus 5.1.3: … fuerat ex ratione sumptus offensio, non appareret. ille sic dies. postridie ax Arpinati profecti sumus. ut in Arcano Quintus maneret dies fecit, ego Aquini, sed prandimus in Arcano. nosti hunc fundum. quo ut venimus, humanissi …
All forms of arcanus (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.