Learn Hardcore Turkish: Toplantı kaydedilmelidir. - The meeting should be recorded.

The element -meli / -malı is the “necessity” (gereklilik) mood in Turkish, equivalent to English must/should. Adding -dir at the end is the third-person definite personal suffix, which makes the statement more formal or certain. So kaydedil-melidir literally means “it is necessary to be recorded” or idiomatically “must be recorded.”

Can we omit the -dir at the end and just say Toplantı kaydedilmeli?

Yes. In everyday colloquial Turkish, the -dir is often dropped, yielding Toplantı kaydedilmeli. It still means “The meeting must be recorded,” but sounds less formal. Adding -dir simply adds a layer of official or written-style emphasis.

How is the passive voice formed in this verb?

Starting from the active verb kaydet- (“to record”):

Insert the passive suffix -il (after a consonant) → kaydet + il → kaydetil.
Apply regular vowel harmony changes: kaydetil → kaydedil.
Then add the necessity suffix -meli and the personal suffix -dir → kaydedil
- meli
  - dir = kaydedilmelidir.

Can you break down kaydedilmelidir into its morphemes?