flop
verb
°To fall heavily, because lacking energy.
"He flopped down in front of the television as he was exhausted from work."
°To fail completely, not to be successful at all (about a movie, play, book, song etc.).
"The latest album flopped and so the studio canceled her contract."
noun
°An incident of a certain type of fall; a plopping down.
°A complete failure, especially in the entertainment industry.
synonyms: dud, fiasco, turkey, box office bomb