A "denier" refers to someone who refuses to accept or believe in something, particularly when there is evidence or proof to support it. Full definition
And 12 Years shows the cruelty of denying not only someone's freedom but his identity. (metacritic.com)
He's the author of three books and the famous target of climate deniers for his early recognition of rapid global warming dubbed «the hockey stick graph». (ecoshock.org)
The same universities who denied for years and years minorities equal access to equitable educational opportunities? (religion.blogs.cnn.com)