Mawson, C.O.S., ed. (18701938). Rogets International Thesaurus. 1922.
Class IV. Words Relating to the Intellectual Faculties
Division (II) Communication of Ideas
Section II. Modes of Communication
VERACITY; truthfulness, frankness &c. adj.; truth, soothfastness [archaic], sooth [archaic], veridicality, sincerity, candor, honesty, fidelity; plain dealing, bona fides [L.]; love of truth; probity [See Probity]; ingenuousness (artlessness) [See Artlessness].
the truth the whole truth and nothing but the truth; honest -, unvarnished -, sober- truth (fact) [See Truth]; unvarnished tale; light of truth.
SPEAK THE TRUTH, tell the truth; speak on oath; speak without -equivocation, - mental reservation; speak by the card; paint in its -, show oneself in ones- true colors; make a clean breast
(disclose) [See Disclosure]; speak ones mind (be blunt) [See Artlessness]; not lie [See Falsehood], not deceive [See Deception].
TRULY (really) [See Truth]; in plain words [See Artlessness]; in -, with -, of a -, in good- truth; as the dial to the sun, as the needle to the pole; honor bright [colloq.]; troth; in good -sooth, - earnest; soothfast [archaic], unfeignedly, with no nonsense, in sooth, sooth to say, bonâ fide [L.], in foro conscientiæ [L.]; without equivocation; cartes sur table [F.], from the bottom of ones heart; by my troth (affirmation) [See Affirmation].
Di il vero e affronterai il diavolo.
Dichtung und Wahrheit.
Esto quod esse videris.
Magna est veritas et prævalet.
That golden key that opes the palace of eternity.Milton