"substantiation" in German substantiation Nachweisführung Untermauerung Detailed translations for "substantiation" substantiation substantiation die Nachweisführung{feminine} substantiation die Untermauerung{feminine} His daughter says that it was mostly my client's brand, but we have no substantiation of that. Source: opensubtitles.org Corpus by OPUS Request review Untermauerung dafür. English synonyms for "substantiation" substantiation {n} check confirmation proof validation verification