bandwagoner

noun

band·​wag·​on·​er ˈband-ˌwa-gə-nər 

variants or bandwagoneer

¦band-ˌwa-gə-¦nir 

plural bandwagoners or bandwagoneers

chiefly US

: a person who takes part in or becomes enthusiastic about something only when it is popular or fashionable

… ugly performances through December and the first half of January caused more than a few bandwagoners to jump ship …

—Kevin Greenstein, New York Sun, 6 Feb. 2008

… Hawks fans bellyached about the affluent bandwagoners who are scooping up tickets …

—Dan McNeil, Chicago Tribune, 28 May 2010

Though they are sometimes derided as shameless bandwagoners who leap into and out of stocks with abandon—increasing volatility in the process—it's not always a fair charge: Some momentum investors actually hold stocks for relatively long periods.

—Melanie Warner, Fortune, 9 Dec. 1996

The original innovators have moved on, and all that remains are bandwagoneers pumping out an astounding amount of identical-looking product …

—Patricia Calhoun and Justin F. Farrar, Houston Press, 31 Aug. 2006

Word History

Etymology

bandwagon + -er entry 2

First Known Use

1926, in the meaning defined above

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