The phrase "are mostly false" is correct and usable in written English.
It can be used when discussing the accuracy or truthfulness of statements, claims, or information, indicating that the majority of them are not true.
Example: "The rumors circulating about the new policy are mostly false and should not be taken seriously."
Alternatives: "are largely untrue" or "are primarily incorrect".
Those are mostly false choices.
It is a warning against the illusory intimacy offered on social media: a "love story that is mostly made up, from memories that are mostly false, between people who were mainly not there".
My research, involving many hundreds of in-depth interviews and several national surveys involving thousands of young people, has shown that the negative stereotypes are mostly false and today's emerging adults are a remarkably idealistic and hard-striving generation.
They are mostly false.Men convicted of sex offences involving children are not, in fact, all that likely to commit further crimes.
But perhaps the thesis that moral judgments are mostly false was a bit too much for a dedicated moralist such as he.
But when applied to tens, hundreds and thousands of users, this model ends up generating a noisy flood, and security teams have to struggle with wasted time and must sort through tons of unimportant events that are mostly false positives.
That is mostly false.And the PNV?
Fact Check: This assertion is mostly false.
These sets themselves had been damaged and altered many times, and were mostly false fronts to begin with — so what has really been lost?
According to PolitiFact, of the 59 statements by Bachmann that the site has checked since 2009, 44 (a whopping 75 percent) were mostly false or worse.
The fact-checking site Politifact found that of the Trump statements it had assessed, 15% were mostly false, 36% were false and 19% were outright "pants on fire" lies.
