Vous avez cherché: sub secreto (Latin - Anglais)

sub secreto
in confidence, keep secret

secreto
secreto separately; secretly, in private;

sub
moon

sub lege
after the law

sub arbore
under the tree

sub specie boni
as such,

domos sub malleo
house under the hammer

semper sub-paratum
always ready

sub judice/sub iudice
under a judge

sub verbo (s.v.)
under the word