oddball

English

Compound of odd +‎ ball. Attested since the 1940s, with the adjective appearing earlier than the noun.

oddball (plural oddballs)

An eccentric or unusual person.
- 1964, Earl Warren et alia, Report of the President's Commission on the Assassination of President John F. Kennedy‎, page 685:
  Miss Quinn thought that Oswald spoke Russian well in view of his lack of formal training; she found the evening uninteresting. Donovan, with whom she had a date later, testified that she told him that Oswald was “kind of an oddball.”
- 1989, Maris Soule, Storybook Hero, page 5:
  "She's different, mister. A real oddball, if you know what I mean. But your little girl would love her. All kids love the Doll Lady."
(neuroscience) A deviant stimulus that appears among repetitive stimuli during an experiment, to trigger an event-related potential in the participant.

(eccentric or unusual person): kook, odd duck, strange fish, queer fish, weirdo; see also Thesaurus:strange person

eccentric person

Bulgarian: чудак (bg) m (čudak), чешит (bg) m (češit)
Chinese:
Mandarin: 怪人 (zh) (guàirén)
Czech: podivín m
Dutch: kwast (nl)
French: excentrique (fr) m or f, olibrius (fr) m
German: Sonderling (de) m, Exzentriker (de) m
Hungarian: csodabogár (hu), különc (hu)
Indonesian: miring (id)
Italian: sagoma (it) f, tomo (it) m
Japanese: 変人 (ja) (へんじん, henjin)
Macedonian: чу́дак m (čúdak)
Maori: whanokē, korokē
Norwegian: eksentriker
Plautdietsch: Jräp f
Portuguese: excêntrico (pt) m
Romanian: ciudat (ro) m
Russian: сумасбро́д (ru) m (sumasbród), чуда́к (ru) m (čudák), эксце́нтрик (ru) m (ekscéntrik)
Swedish: kuf (sv) c

oddball (not comparable)

Exotic, not mainstream.
- 1984, Steven K. Roberts, The Complete Guide to Microsystem Management:
  An oddball word processor, for example, might never be supported by such helpful tools as spelling checkers, indexing programs, footnote utilities,...

exotic, not mainstream