Etymology
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anonym (n.)
1812, "nameless person," from French anonyme, from noun use of Latin anonymus, from Greek anonymos "without a name" (see anonymous). Meaning "fictitious name" is recorded from 1864.
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anonymity (n.)
"state or quality of being nameless," 1820; see anonym "nameless person" + -ity. In same sense anonymousness is recorded from 1802.
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ananym (n.)

real name written backwards, 1867, from Greek ana "back" (see ana-) + onyme "name" (from PIE root *no-men- "name"). Properly anonym, but this has another sense in English.

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anonymous (adj.)

c. 1600, "without a name;" 1670s, "published under no name, of unknown authorship," from Late Latin anonymus, from Greek anonymos "without a name," from an- "without" (see an- (1)) + onyma, Æolic dialectal form of onoma "name" (from PIE root *no-men- "name").

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