Disillusioned with: This is the most common preposition used after "disillusioned." It indicates a loss of faith, hope, or trust in something or someone.
* Example: She was disillusioned with the political system.
Disillusioned by: This preposition suggests that something or someone has caused the disillusionment.
* Example: He was disillusioned by his experiences in the war.
Disillusioned about: This preposition indicates a change of opinion or belief about something.
* Example: I was disillusioned about the future of the company.
Disillusioned in: This preposition can be used to express a loss of faith in a person or idea.
* Example: He was disillusioned in his religious beliefs.
Other prepositions: You could also use prepositions like "at," "of," or "towards" after "disillusioned," depending on the specific context.
Example:
* He was disillusioned at the lack of progress.
* She was disillusioned of her dreams.
* The company was disillusioned towards the new CEO.
Ultimately, the best preposition to use after "disillusioned" depends on the specific context and the meaning you want to convey.