Delusion: meaning, definitions and examples

Used when someone firmly believes in something that is false, especially in a way that is irrational or not based on reality. Often associated with mental health issues.

• She suffered from the delusion that she was being watched.
• Despite all evidence to the contrary, he maintained his delusion of grandeur.

Refers to perceiving things that are not there, typically as a result of illness or drug use. This word has a medical connotation.

• After taking the medication, he started to experience hallucinations of brightly colored animals.
• The patient reported hearing voices that no one else could hear, suggesting auditory hallucinations.

Used when something deceives the senses or presents a false appearance. This can involve optical tricks or misleading situations.

• The magician's act created the illusion of sawing his assistant in half.
• The road looked wet due to the heat, but it was just an illusion.

Used when describing imaginative thoughts or dreams that are not real. Often connected with creative ideas or daydreams.

• He has a fantasy of becoming a famous rock star.
• The book is set in a rich fantasy world filled with magic and mythical creatures.

A delusion is a strongly held belief that is not true or grounded in reality, often associated with mental health issues.

• 'He has a delusion that he is being followed by secret agents
• '

A misconception is an incorrect understanding or interpretation of a fact or concept, often due to misinformation or lack of knowledge.

• 'There is a common misconception that lightning never strikes the same place twice
• '

A fallacy is a mistaken belief or flawed argument based on unsound reasoning, often in logical or philosophical contexts.

• 'The argument that vaccines cause autism is a common fallacy
• '

An error is a mistake or incorrect decision, often used in contexts where a wrong action or thought has occurred.

• 'The report contained several errors that needed correction
• '