The past participle of imagine is imagined.
The past participle is used in the formation of perfect tenses (present perfect, past perfect, and future perfect) and passive voice.
Here are some examples:
- Present Perfect: I have imagined many things in my life.
- Past Perfect: She had imagined a different future for herself.
- Future Perfect: By next year, we will have imagined a new solution.
- Passive Voice: The story was imagined by a talented writer.