Self-deception is a cognitive process wherein an individual deceives themselves into believing something that is not true. Synonyms for self-deception include delusion, illusion, fantasy, mirage, and misapprehension. These words reflect the common theme of one's subjectivity, where an individual's perception, rather than an objective reality, becomes the basis for their beliefs. Other synonyms for self-deception include self-delusion, self-cognitive distortion, and self-justification. These terms indicate that individuals who engage in self-deception may struggle with confronting reality, and instead seek to make their beliefs align with their desires or ideals. While self-deception may provide temporary solace or comfort, it can ultimately lead to negative consequences and hinder personal growth and development.