ˌek(s)sə̇ˈlenchēˌō, -)ˌsīˈ- adverb (or adjective)
or e silentio ˌēsə̇-, ˌēˌsī-
Etymology: Latin ex silentio from silence
: from the fact of lack of specific evidence (as of written or oral attestation)
an argument that was built up wholly ex silentio