flop
noun [ C ]
informal uk/flɒp/ usan unsuccessful product, plan, etc.:
The film was the first commercial flop of the director's career.
The plan to create a separate internet subsidiary proved a flop.
a complete/total/expensive flop The new mobile technology turned out to be an expensive flop.
flop
verb [ T ]
informal uk/flɒp/ usto be unsuccessful:
Many of the big internet companies in the US have flopped badly in China.