"reborn, reproduced, restored," mid-15c., from Latin regeneratus, past participle of regenerare "bring forth again" (see regeneration). Especially in theology, "changed from a natural to a spiritual state."
Middle English blessinge, from Old English bletsunga, bledsunge, "divine grace; protecting influence (of a deity, saint); state of spiritual well-being or joy;" also of a sanction or benediction of the Pope, a priest, etc.; verbal noun from bless. The meaning "a gift from God, that which gives temporal or spiritual benefit" is from mid-14c. In the sense of "religious invocation before a meal" it is recorded from 1738. Phrase blessing in disguise is recorded from 1746.
Hindu sage or holy man, 1785, from Sanskrit, from maha "great" (from PIE root *meg- "great") + rishi "inspired sage." In general use, a title for a popular spiritual leader.
1891, a trademark name (originally by Kennard Novelty Co., Baltimore, Md.) for a "talking board" with a planchette, used to record spiritual messages, etc.; the name is compounded from French oui and German ja, both meaning "yes."