An oratory is a long, formal speech. Often one that's a bit puffy and overblown, making you think the speaker really likes the sound of his own voice.

Oratory is from the Latin word oratorius for "speaking or pleading." In fact, oratories often leave audiences pleading for an end to the speech. They're the kind of thing evangelical preachers are good at. An oratory is also a little chapel, from the Latin oratorium for "a place of prayer," or a specific group of Roman Catholics, who name their oratories after where they're built, like the Brooklyn Oratory.

Definitions of oratory

n addressing an audience formally (usually a long and rhetorical address and often pompous)

“he loved the sound of his own oratory
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keynote address, keynote speech
a speech setting forth the keynote
nominating address, nominating speech, nomination
an address (usually at a political convention) proposing the name of a candidate to run for election
an instance of oratory
vehement oratory
epideictic oratory
a type of oratory used to eulogize or condemn a person or group of people
stump speech
political oratory
salutatory, salutatory address, salutatory oration
an opening or welcoming statement (especially one delivered at graduation exercises)
valediction, valedictory, valedictory address, valedictory oration
a farewell oration (especially one delivered during graduation exercises by an outstanding member of a graduating class)
broadside, philippic, tirade
a speech of violent denunciation
a flowery and highly rhetorical oration
harangue, rant, ranting
a loud bombastic declamation expressed with strong emotion
declaiming wildly
Type of:
address, speech
the act of delivering a formal spoken communication to an audience

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