Sub silentio
Defined in 2 dictionaries — Ballentine's (1916), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
Silently.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Under silence; without any nolice being taken. Passing a thing sub silentio may be evidence of consent
Defined under Sub in Black's Law Dictionary.