The passive voice is formed from past active participle and the auxiliary verb شدن (šodan). The future passive participle of a verb is formed from the infinitive in passive voice and the suffix ی (i). Future passive participles literally mean “going to, about to” but depending on the context, they can create words that convey “due to”, “necessary to”, “suitable to”, “worthy of”, “able to”, etc.
| Infinitive | Future Passive Participle |
|---|---|
| شستن šostan to wash |
شستهشدنی šostešodani able to be washed |
| پاک کردن pâk kardan to clean |
پاکشدنی pâkšodani able to be cleaned |
Negative form
The negative form of future passive participle is formed by prefixing ن (na-) to شدن
| Infinitive | Future Passive Participle |
|---|---|
| شستن šostan to wash |
شستهنشدنی šostenašodani unable to be washed |
| پاک کردن pâk kardan to clean |
پاکنشدنی pâknašodani unable to be cleaned |