Adopting a trend or joining a movement because it is fashionable or appears to be gaining momentum, rather than from genuine conviction.
Examples:
- Everyone is jumping on the bandwagon since they saw silver seat covers on a celebrity last week.
- Companies rushed to announce sustainability pledges, but critics accused most of simply jumping on the bandwagon.
Origin: From American political history, where musicians on wagons accompanied election campaigns and supporters would jump aboard.
Synonyms: follow the trend, follow the crowd, go with the herd