early 15c., "bottom of the sea," from Old French profundite (Modern French profondité) and directly from Late Latin profunditatem (nominative profunditas) "depth, intensity, immensity," from profundus "deep, vast" (see profound). Meaning "depth of intellect, feeling, or spiritual mystery" in English is from c. 1500.
mid-14c., regeneracioun, "act of regenerating or producing anew," originally spiritual, also of the Resurrection, from Old French regeneracion (Modern French regénération) and directly from Late Latin regenerationem (nominative regeneratio) "a being born again," noun of action from past participle stem of Latin regenerare "make over, generate again," from re- "again" (see re-) + generare "bring forth, beget, produce," from genus "race, kind" (from PIE root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups).
Originally theological, "radical spiritual change in an individual accomplished by the action of God;" of animal tissue, "power or process of growing again," early 15c.; of forests, 1888.
Old English deorcnysse "absence of light," from dark (adj.) + -ness. The 10c. Anglo-Saxon treatise on astronomy uses þeostrum for "darkness." Figurative use for "sinfulness, wickedness" is from early 14c. From late 14c. as "obscurity," also "secrecy, concealment," also "blindness," physical, mental, or spiritual.
mid-14c., plesaunce, "the gratification or propitiation of God or some other deity;" late 14c., "satisfaction, enjoyment, delight; moral, spiritual, or intellectual satisfaction," from Old French plaisance "pleasure, delight, enjoyment," from plaisant "pleasant, pleasing, agreeable" (see pleasant).
c. 1300, deliveraunce, "action of setting free" in physical or spiritual senses, from Old French delivrance (12c., Modern French délivrance), from delivrer "to set free" (see deliver). Formerly also with senses now restricted to delivery: "childbirth; act of giving or transferring to another; utterance."
masc. proper name, Biblical third son of Adam and ancestor of all the surviving human race via Noah, literally "set, appointed," from Hebrew Sheth, from shith "to put, set." The Gnostic sect of Sethites (1765) flourished 2c. and believed Christ was a reappearance of Seth, whom they venerated as the first spiritual man.
late 14c., "provision, provisioning; aid, encouragement; act or fact of refreshing; that which refreshes," originally mental and spiritual, from Old French refreschement (Modern French rafraîchissement), from refreschier "refresh, renew" (see refresh (v.)). Sense of "state of being refreshed" is by late 15c. Refreshments, of food and drink only, is by 1660s.