unaccusativity

Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Germanic *un- Proto-West Germanic *un- Old English un- Middle English un- English un- Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Italic *kaussā Old Latin caussa Latin causa Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Italic *-āō Latin -ō Latin accūsō Proto-Indo-European *-wósder. Latin -īvus Ancient Greek αἰτῐᾱτῐκή (aitĭātĭkḗ)calq. Latin accūsātīvusder. Anglo-Norman accusatifbor. ▲ Latin accūsātīvusder. Middle French acusatifbor. ▲ Latin accūsātīvusbor. Middle English accusative English accusative Proto-Indo-European *-teh₂ Proto-Indo-European *-ts Proto-Indo-European *-teh₂ts Latin -itāsder. Old French -itebor. Middle English -ite English -ity English unaccusativity From un- + accusative + -ity.

来源：wiktionary