Adjective

(en adjective)

Not finished, not completed.

* {{quote-news

, year=2012 , date=May 9 , author=John Percy , title=Birmingham City 2 Blackpool 2 (2-3 on agg): match report , work=the Telegraph citation , page= , passage=Holloway has unfinished business in the Premier League after relegation last year and he will make a swift return if he can overcome West Ham a week on Saturday. Sam Allardyce, the West Ham manager, will be acutely aware that when the stakes are high, Blackpool are simply formidable.}}

Adjective

(en adjective)

(dated) Extinguished, no longer alight (of fire, candles etc.)

Poor Edward's cigarillo was already extinct .

No longer used; obsolete, discontinued.

* Luckily, such ideas about race are extinct in current sociological theory.

*

Indeed the very fact that the English spelling system
writes in there'' as two words but ''therein'' as one word might be taken as suggest-
ing that only the former is a productive syntactic construction in Modern
English, the latter being a now extinct construction which has left behind a
few fossil remnants in the form of compound words such as ''thereby .

No longer in existence; having died out.

The dinosaurs have been extinct for millions of years.

(vulcanology) No longer actively erupting.

Most of the volcanos on this island are now extinct .