die out
verb1
Idiomatic To become extinct.
- The dinosaurs died out a long time ago.
- The original family who had begun to build a palace to rival Nonesuch had died out before they had put up little more than the gateway,[…].1963, Margery Allingham, chapter 1, in The China Governess: A Mystery, London: Chatto & Windus, →OCLC:
1 more example
- Shepard: I thought you always needed another species to serve as one of the parents. Liara: Think about it, Shepard. If we were not able to mate with our own species, we would have died out long before we ever mastered space flight and left our homeworld.2008, BioWare, Mass Effect (Science Fiction), Redwood City: Electronic Arts, →ISBN, →OCLC, PC, scene: Med Bay Lab, SSV Normandy:
2
Idiomatic To cease gradually.
- The prejudice has died out.
- However, apart from all this, the Chief was a grand old man, belonging to a class of individualists which seems to be dying out in these days, when standard behaviour seems to be as prevalent as standard designs.1945 January and February, A Former Pupil, “Some Memories of Crewe Works—III”, in Railway Magazine, page 14: