Disbelieve is a term that means to not accept something as true or valid. It is closely related to DISTRUST, MISTRUST, QUESTION, DISCREDIT, and REJECT. DISTRUST is the feeling of not trusting someone or something, while MISTRUST is a lack of trust in someone or something. Questioning is the act of asking questions to gain more information or to challenge something. Discrediting is the act of damaging someone's reputation or credibility. Rejecting is the act of refusing to accept something, and doubting is the feeling of uncertainty or lack of conviction. All of these terms are related to disbelief, and together they form a strong foundation for not accepting something as true or valid.