Learn Hardcore Turkish: İhmal edilecek ufak detaylar ileride büyük sorunlara dönüşebilir. - Minor details that will be neglected can turn into big problems in the future.

ihmal edilecek is a future-passive participle. It comes from the noun ihmal (“neglect”) + edil- (the passive stem of etmek, “to do”) + -ecek (future participle). Literally it means “that will be neglected” or “(to be) neglected.”

Why is the verb in passive form (edilecek) instead of active (edecek)?

If you used active edecek, you’d be saying “small details that will neglect,” which doesn’t make sense because the details aren’t doing the neglecting. We want the details themselves to be the ones being neglected. That’s why we use the passive participle edilecek (“to be neglected”).

What does the suffix -ecek in edilecek indicate?

The suffix -ecek attaches to the verb (or passive stem) to form a future-participle in Turkish. It often means “that will [verb].” In edilecek, it marks the action (neglecting) as something that will happen to the subject (the details).

What is the difference between ihmal edilen and ihmal edilecek?

Both are passive participles of ihmal etmek, but:

ihmal edilen = “that is/has been neglected” (past or present passive)
ihmal edilecek = “that will be neglected” (future passive)
So edilen refers to current or past neglect, while edilecek points to neglect occurring in the future.