Caesar

noun

Cae·​sar ˈsē-zər How to pronounce Caesar (audio)
1
: any of the Roman emperors succeeding Augustus Caesar
used as a title
2
a
often caesar : a powerful ruler:
(1)
b
[from the reference in Matthew 22:21] : the civil power : a temporal ruler

Examples of Augustus in a Sentence

like many another third-world caesar, he cared little for the destitute class into which he himself had been born

Word History

Etymology

Gaius Julius Caesar

First Known Use

circa 1548, in the meaning defined at sense 1

Time Traveler
The first known use of Augustus was circa 1548

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Cite this Entry

“Augustus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Augustus. Accessed 26 Jun. 2026.

Biographical Definition

Augustus 1 of 2

biographical name (1)

Au·​gus·​tus ȯ-ˈgə-stəs How to pronounce Augustus (audio)
ə-
variants or until 27 B.C. Octavian
63 b.c.–a.d. 14 originally Gaius Octavius äk-ˈtā-vē-əs How to pronounce Augustus (audio) then Gaius Julius Caesar 1st Roman emperor (27 b.c.–a.d. 14)

Caesar

2 of 2

biographical name (2)

Cae·​sar ˈsē-zər How to pronounce Caesar (audio)
(Gaius) Julius 100–44 b.c. Roman general, statesman, and writer

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