SYN: Hidden, recondite, difficult, profound, deep, curious, obscure, mystical, occult, hard, dark.
— from A Complete Dictionary of Synonyms and Antonyms or, Synonyms and Words of Opposite Meaning by Samuel Fallows

Thus through storm-tost human bosoms God oft sends His rays divine; Passionate errors, when forgiven, Lead us on to trust sublime.
— from The Continental Monthly, Vol. 5, No. 3, March, 1864 Devoted to Literature and National Policy by Various

a la tierra el sol con su hermosura Rayos de paz y celestial ventura.
— from El Estudiante de Salamanca and Other Selections by José de Espronceda

She liked his drollery and his strength, she admired his poise and self-reliance; and she had the greatest respect for his teaching ability, of which she had received direct proof.
— from Tutors' Lane by W. S. (Wilmarth Sheldon) Lewis

The sun——" "The sun had risen," declaimed Phillis, triumphantly taking up the tale; "and with one wild sheriek of disappointed rage the Kelpie vanished away, and the wee lassie was saved !"
— from The Right Stuff: Some Episodes in the Career of a North Briton by Ian Hay

The picturesque setting, Calabria and its surroundings, the beautiful Sorrento and the Gulf of Salerno, with the bewitching accessories that climate, sea, and sky afford, give Mr. Crawford rich opportunities to show his rare descriptive powers.
— from The Romance of a Plain Man by Ellen Anderson Gholson Glasgow

These small headwater reservoirs, designed primarily for local flood prevention, may include storage for sediment, water supply, water quality control or recreation.
— from The Nation's River: A report on the Potomac From the U.S. Department of the Interior by United States. Department of the Interior