oddity

noun, plural odd·i·ties for 1, 3.

1. an odd or remarkably unusual person, thing, or event.
2. the quality of being odd; singularity, strangeness, or eccentricity.
3. an odd characteristic or trait; peculiarity.

noun plural -ties

1. an odd person or thing
2. an odd quality or characteristic
3. the condition of being odd

n.1713, “odd characteristic or trait,” a hybrid from odd + -ity. Meaning “odd person” is first recorded 1748.