arcane

/ˌɑɹˈkeɪn/

understood by few; mysterious or secret

arcane in a sentence

“The arcane rituals were known only to initiates.”

Latin arcanus secret, hidden from arca chest, box from arcere to shut up

Related Words

quotidian

of or occurring every day; ordinary

mundane

lacking interest or excitement; dull

pedestrian

lacking inspiration or excitement; dull

prosaic

having the style of prose; lacking poetic beauty

commonplace

not unusual; ordinary

prevalent

widespread in a particular area or at a particular time