oddity
n.something that is strange, unusual, or different from what is normal. You use this to describe a person, object, or event that stands out because it is not common.
n.a person, object, or event that is strange, unusual, or out of the ordinary. Often carries a slightly negative or curious tone depending on the context.
“The museum displays a strange oddity from the deep sea.”
“The old house was full of oddities, like a clock that never ticked and a mirror that showed nothing.”
“While the artist's early works were conventional, his later pieces were celebrated for their eccentric oddities, which challenged the very definition of what a painting should be.”
From odd + -ity.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.