-acity

English

Etymology tree

Proto-Indo-European *-eh₂ks

Proto-Italic *-āks

Latin -āx

Latin -i-

Latin -tās

Latin -ācitāsder.

Middle French -acitéder.

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Latin -āx

Proto-Indo-European *-éyos

Proto-Italic *-ejos

Proto-Italic *-eos

Latin -eus

Latin -āceus

Latin -ācea

Proto-Indo-European *-teh₂

Proto-Indo-European *-ts

Proto-Indo-European *-teh₂tsder.

Latin -itās

Old French -itebor.

Middle English -ite

English -ity

English -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.

-acity