c. 1600, "to pray, to plead," from Latin oratus, past participle of orare "speak, pray, plead, speak before a court or assembly" (see orator). The meaning "make a formal speech" emerged c. 1860 in American English as a back-formation of oration. Related: Orated; orating.
实用例句
1. It certainly is a fine thing to be able to orate.