Vous avez cherché: sed frustra (Latin - Anglais)

sed frustra
mais en vain

frustra
frustra in vain; for nothing, to no purpose;

in frustra
in vain

sed
but

fide sed
fede sed vide

sed nolo.
but i don't want to.

fide sed vide
but be careful, the faith,

sed surrexit:
you had entrusted

ne frustra vixisse videar
be not in vain because i have spent

tu tuis oculis spectas sed saepe frustra vides
you look with your own eyes, but often you see in vain

qui custodiunt vanitates frustra ego
i love that observe lying vanities

verumtamen in imagine pertransit homo sed et frustra conturbatur thesaurizat et ignorat cui congregabit e
for my loins are filled with a loathsome disease: and there is no soundness in my flesh.