Etymology

casus rectus

Today it means: The nominative case, sometimes grouped with the vocative case, as a single morphological case contrasted with the oblique case. Full definition →

Latin cāsus rēctus
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The story

  1. Latin · learned borrowing fromcāsus rēctus
  2. English todaycasus rectus

Learned borrowing from Latin cāsus rēctus (literally “straight case”).

Etymology from Wiktionary, CC BY-SA 4.0.