figment of (one's)/the imagination

An experience that initially is thought to be real but is actually imagined. I thought I heard the sound of my front door opening last night but it turned out to be a figment of my imagination.

Common Names:

Name	Pronounced	Usage
Lorencio	lo-REN-thyo (Spanish), lo-REN-syo (Latin American Spanish)	Medieval Spanish
Gerhardt	GER-hahrt	German
AmbroŻY	-	Polish (Rare)
Floor	FLO:R	Dutch
Darius	[də'raiəs]
Murtaz	-	Georgian