One of the mysteries of the English language finally explained.
In silence; without express mention or notice; (also) without objection.
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.
sub silentio/ˌsʌb sɪˈlɛn(t)ʃɪəʊ/
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