English

Etymology

Etymology tree
Proto-Indo-European *ḱe?
Proto-Indo-European *ḱóm
Proto-Italic *kom
Proto-Italic *kom-
Proto-Indo-European *-teros
Proto-Italic *-teros
Proto-Italic *komterosder.
Proto-Italic *komterād
Latin contrāder.
Old French contre-
Anglo-Norman countre-bor.
Middle English counter-
English counter-
English instance
English counterinstance

    From counter- + instance.

    Noun

    counterinstance (plural counterinstances)

    1. An instance (example) which shows the opposite of a given theory to be true, thus disproving it.
    source: https://en.wiktionary.org/wiki/counterinstance