Where does “contrapair” come from?

contrapair (English) comes from English pair, from Middle English paire, from Old French paire, from Latin paria, from Latin par, from Proto-Indo-European per — around; through.

contrapair (English): A pair of objects, one of which is the opposite...

Definitions

  1. A pair of objects, one of which is the opposite...

Ancestry of “contrapair”, step by step

contrapair traces back through two separate lines of ancestry.

via English pair

StepLanguageWordMeaning
1EnglishpairTwo similar or identical things taken together;...
2Middle EnglishpaireA pair; a group of two similar, identical, or...
3Old Frenchpaire
4Latinparianominative neuter plural of pār; accusative...
5Latinpareven; equal; like
6Proto-Indo-Europeanperaround; through

via English Contra

StepLanguageWordMeaning
1EnglishContraA member of any of various rightist guerrilla...
2Latincontrāagainst
3Latinubīwhere? in what place?, in which place?
4Latincubī
5Proto-Italic*kʷuðeiwhere
Every word from Proto-Indo-European perEvery word from Latin parEvery word from Latin paria