Antonyms of adj duplicitous

1 sense of duplicitous

Sense 1
ambidextrous, deceitful, double-dealing, duplicitous, Janus-faced, two-faced, double-faced, double-tongued -- (marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another; "she was a deceitful scheming little thing"- Israel Zangwill; "a double-dealing double agent"; "a double-faced infernal traitor and schemer"- W.M.Thackeray)

INDIRECT (VIA dishonest) -> honest, honorable -- (not disposed to cheat or defraud; not deceptive or fraudulent; "honest lawyers"; "honest reporting")

Similarity of adj duplicitous

1 sense of duplicitous

Sense 1
ambidextrous, deceitful, double-dealing, duplicitous, Janus-faced, two-faced, double-faced, double-tongued -- (marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another; "she was a deceitful scheming little thing"- Israel Zangwill; "a double-dealing double agent"; "a double-faced infernal traitor and schemer"- W.M.Thackeray)
       => dishonest (vs. honest), dishonorable -- (deceptive or fraudulent; disposed to cheat or defraud or deceive)