colloquialese

Etymology tree
Proto-Indo-European *ḱe?
Proto-Indo-European *ḱóm
Proto-Italic *kom
Proto-Italic *kom-
Latin con-
Latin loquor
Latin colloquor
Proto-Indo-European *-yós
Proto-Italic *-ios
Old Latin -ios
Latin -ius
Latin -ium
Latin colloquiumder.
Middle English colloquies
English colloquy
Proto-Indo-European *h₂el-der.?
Proto-Italic *-ālis
Latin -ālisbor.
Old French -albor.
▲
Latin -ālis
Old French -elbor.
▲
Latin -ālisbor.
Middle English -al
English -al
English colloquial
Proto-Indo-European *-iskos
Proto-Germanic *-iskaz
Proto-West Germanic *-iskbor.
Late Latin -iscus
▲
Vulgar Latin -iscus
Latin -ēnsis
Old French -eisbor.
Middle English -eys
English -ese
English colloquialese
From colloquial + -ese.