Etymology
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oddity (n.)

1713, "odd characteristic or trait," a hybrid from odd + -ity. Meaning "odd person" is recorded by 1748; that of "something old or peculiar" is by 1834.

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odditorium (n.)

"shop that sells oddities," 1914, from oddity + -orium (see -ory).

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queerness (n.)

1680s, "strangeness, oddity," from queer (adj.) + -ness. Meaning "homosexuality" is from 1956. Alternative queerity is by 1711.

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peculiarity (n.)

c. 1600, "exclusive possession, private ownership" (a sense now obsolete); 1640s, "a special characteristic of a person or thing," from peculiar + -ity, or else from Latin peculiaritas. Meaning "quality of being peculiar, individuality" is from 1640s; that of "an oddity" is attested by 1777. Related: Peculiarities.

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