1. (

• illusion ,
• semblance

) an erroneous mental representation ;

2. (

• illusion ,
• fantasy ,
• phantasy ,
• fancy ,

) something many people believe that is false; "they have the illusion that I am very wealthy" ;

3. (

• delusion ,
• illusion ,
• head_game

) the act of deluding; deception by creating illusory ideas ;

4. (

• magic_trick ,
• conjuring_trick ,
• trick ,
• magic ,
• legerdemain ,
• conjuration ,
• thaumaturgy ,
• illusion ,
• deception ,

) an illusory feat; considered magical by naive observers ;