oddball
odd·ball
noun
1.
a person with an unusual or odd personality
Origin
Compound of odd + ball. First used in late 1930s, describing an extra ball played as a bonus in pin-ball type games. Well-attested since the 1940s, with the adjective appearing earlier than the noun.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.