a nine-day wonder

a nine/one/seven-day wonder

someone or something that causes interest or excitement for a short period but is then quickly forgotten His music was derided by an older generation convinced that he was a nine-day wonder.

Common Names:

Name	Pronounced	Usage
Eli	['i:lai]
Joel	JOL (English), JO-əl (English), ho-EL (Spanish), zhoo-EL (Portuguese), YO-el (Swedish, Finnish)	English, Spanish, Portuguese, Swedish, Finnish, Biblical
Naila	-	Arabic
Dana (4)	-	Persian, Arabic
Ayres	[ɛəz]
Ukko	OOK-ko (Finnish)	Finnish, Finnish Mythology