Antonyms of adj ingenuous

2 senses of ingenuous

Sense 1
ingenuous (vs. disingenuous), artless -- (characterized by an inability to mask your feelings; not devious; "an ingenuous admission of responsibility")

disingenuous (vs. ingenuous), artful -- (not straightforward or candid; giving a false appearance of frankness; "an ambitious, disingenuous, philistine, and hypocritical operator, who...exemplified...the most disagreeable traits of his time"- David Cannadine; "a disingenuous excuse")
        => distorted, misrepresented, perverted, twisted -- (having an intended meaning altered or misrepresented; "many of the facts seemed twisted out of any semblance to reality"; "a perverted translation of the poem")

Sense 2
innocent, ingenuous -- (lacking in sophistication or worldliness; "a child's innocent stare"; "his ingenuous explanation that he would not have burned the church if he had not thought the bishop was in it")

INDIRECT (VIA naive) -> sophisticated -- (having or appealing to those having worldly knowledge and refinement and savoir-faire; "sophisticated young socialites"; "a sophisticated audience"; "a sophisticated lifestyle"; "a sophisticated book")

Similarity of adj ingenuous

2 senses of ingenuous

Sense 1
ingenuous (vs. disingenuous), artless -- (characterized by an inability to mask your feelings; not devious; "an ingenuous admission of responsibility")
       => candid, open, heart-to-heart -- (openly straightforward and direct without reserve or secretiveness; "his candid eyes"; "an open and trusting nature"; "a heart-to-heart talk")
       => undistorted -- (without alteration or misrepresentation; "his judgment was undistorted by emotion")
          Also See-> naive#1, naif#1; sincere#1

Sense 2
innocent, ingenuous -- (lacking in sophistication or worldliness; "a child's innocent stare"; "his ingenuous explanation that he would not have burned the church if he had not thought the bishop was in it")
       => naive (vs. sophisticated), naif -- (marked by or showing unaffected simplicity and lack of guile or worldly experience; "a teenager's naive ignorance of life"; "the naive assumption that things can only get better"; "this naive simple creature with wide friendly eyes so eager to believe appearances")