sub silentio
/ˌsʌb sɪˈlɛn(t)ʃɪəʊ/adverb
In silence; without express mention or notice; (also) without objection.
Origin
Mid 16th century; earliest use found in Thomas Becon (1512/13–1567), theologian and Church of England clergyman. From post-classical Latin sub silentio from classical Latin sub + silentiō, ablative of silentium.