overhype
verb [ T ]
disapproving (also over-hype) uk/ˌəʊvəˈhaɪp/ us MARKETING
to advertise or praise something more than it deserves in newspapers, on television, online, etc., in order to make people excited about it and want to buy, try it, invest in it, etc.:
People wondered aloud whether the company had been overhyped.
Probably only one in 20 of these stocks will retain their present over-hyped levels.
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hype verb