Delusional synonym,synonyms of delusional

Similarity: Both "delusional" and "delirious" involve a state of mind that is 脱离现实 or not in touch with reality. A person who is delirious, like someone who is delusional, may have false beliefs or perceptions. For example, a person with a high fever might become delirious and have strange ideas, similar to how a delusional person has unfounded beliefs.
Difference: "Delirious" often implies a more temporary and usually physically induced state, such as being caused by illness, fever, or intoxication. It may also involve more confusion and disorientation in addition to false beliefs. "Delusional" is more commonly used to describe a more persistent and psychological state of having fixed, false beliefs that are not easily swayed by evidence.

Similarity: Both terms are related to experiences that are not in line with objective reality. A hallucinatory person, like a delusional one, is experiencing something that isn't really there or has a distorted perception of reality. For instance, someone having a hallucinatory episode may see things that aren't real, and a delusional person may believe in things that have no basis in fact.
Difference: "Hallucinatory" specifically focuses on the presence of hallucinations, which are sensory experiences like seeing, hearing, or feeling things that aren't actually present. "Delusional" is more about false beliefs and ideas that don't necessarily involve sensory disturbances. A person can be delusional without having hallucinations, but a hallucinatory state can sometimes lead to or be associated with delusional thinking.

Similarity: "Fantastical" and "delusional" both involve elements of the imagination and things that are not real or likely to happen in the real world. A fantastical story or idea, like a delusional belief, can be far from the realm of reality. For example, a story about flying horses is fantastical, and a belief that one can fly without any aid is delusional in the sense that it defies the laws of nature.
Difference: "Fantastical" is often used to describe things that are part of fiction, dreams, or creative imagination in a more light-hearted or intentional way. It's used in the context of literature, art, or just imagining wild scenarios for fun. "Delusional" has a more negative and clinical connotation, referring to a state of mind that can be harmful or a sign of a psychological disorder when a person believes these unrealistic things as real.

Similarity: Both "illusory" and "delusional" pertain to things that are not what they seem or are based on false appearances. An illusory perception, like a delusional belief, can mislead a person into thinking something is real when it's not. For example, an optical illusion can create an illusory image that the mind might misinterpret, similar to how a delusional person misinterprets reality.
Difference: "Illusory" is more often used to describe things, situations, or perceptions that are objectively false or misleading due to some external or internal factor creating a false appearance. "Delusional" is more about the person's belief system and their subjective state of holding onto false ideas, often without being able to recognize the truth even when presented with evidence.