The story
- Latin · derived from-ācea
- Latin · derived from-ācitās
- Middle French · derived from-acité
- English today-acity
From (1) Middle French -acité, from Latin -ācitās, from oblique stem of -āx, -ācis + -i- + -tās and (2) suffixal construction from Latin -ācea + -ity.
Etymology from Wiktionary, CC BY-SA 4.0.