One who disillusionizes.

plural of disillusionizer

A feeling of disappointment, akin to depression, arising from the realization that something is not what it was expected or believed to be, possibly accompanied by philosophical angst from having one's beliefs challenged.

plural of disillusionment

Third-person singular simple present indicative form of disillusionize

present participle of disillusionize

simple past tense and past participle of disillusionize

(transitive) To disillusion, disabuse, free from illusion.