a figment of somebody's imagination

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.
See also: figment, imagination, of

a figment of somebody’s imagiˈnation

something which somebody only imagines: Doctor, are you suggesting the pain is a figment of my imagination?
See also: figment, imagination, of
References in periodicals archive ?
Any rumor that Newman-Haas Racing is leaving the Champ Car World Series is a figment of somebody's imagination,'' Newman said in the statement.
It is a figment of somebody's imagination,'' Pakistan's Foreign Ministry spokesman Masood Ahmad Khan told Kyodo News.