Etymology tree Proto-Indo-European *de Proto-Indo-European *-h₁ Proto-Indo-European *déh₁ Proto-Italic *dē Latin dē Latin dē- Proto-Indo-European *kelh₁-der. Latin clāmō Latin dēclāmō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin dēclāmātiōlbor. Polish deklamacja Learned borrowing from Latin dēclāmātiō.