flop

used to emphasize that something failed in every aspect

synonym for 'complete flop', emphasizing the entirety of the failure

to describe a large-scale failure

a film, play, etc., that is not financially successful

a product or venture that does not make money

to describe a failure that is very dramatic and attracts a lot of attention

a failure that cost a lot of money

an emphatic way to describe a very clear and definite failure