jeering or contemptuous behaviour or words
an object of derision or ridicule
a deceitful or contemptible imitation; a travesty
something insultingly or ridiculously inappropriate
make a mockery of something
to undermine it or render it pointless
If these major mining proposals within our most prized countryside are given the go-ahead now, they will make a mockery of the government's future conservation proposals — Climber and Hill Walker