[self-di-seevd, self-]
  1. holding an erroneous opinion of oneself, one's own effort, or the like.
  2. being mistaken, forming an erroneous judgment, etc., in one's own mind, as from careless or wishful thinking: If you thought my friendship was love, you were self-deceived.

Origin of self-deceived

First recorded in 1665–75 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for self-deceived

Historical Examples of self-deceived