People may say untrue things for various reasons, including the desire to avoid conflict, protect themselves or others, or manipulate a situation to their advantage. Sometimes, individuals may genuinely believe in the falsehoods they express due to misinformation or misunderstanding. Additionally, social pressures and the need for acceptance can lead people to distort the truth to fit in or please others. Overall, the motivations behind untruths can be complex and context-dependent.
The word that means "to say something that is untrue" is "lie".
You can say "no es verdad".
Something that is untrue
Nothing.
* When you say something you know is untrue or when people don't trust you anymore.
libel
Superstitious is believing in things that are very untrue. Simple as that.
They were not your friend in the first place. Or someone told them untrue things about you, or they are trying to impress other people who might not like you.
Some people say that it can cause arthritis, but this is untrue. Cracking your knuckles can cause your knuckles to grow larger though.
"Untrue" is a kinder and more tactful way to say something is a lie, or that something is demonstrably false. "Although some of his opponents believe President Obama was born in Kenya, that is completely untrue."
Treat everything they say as potentially untrue.
AnswerPeople who disagree on things like religion can say some improbable things about each other. Some of the things said about Protestants are true and some are untrue. Truth and morality belong equally on each or neither side of such debates.