Someone who is disingenuous is slightly dishonest and insincere in what they say.
例句
It would be disingenuous to claim that this is great art.稱這是藝術瑰寶是言不由衷。
英漢詞典釋義
adj.
不真誠的；不坦率的
It is disingenuous of him to flatter me.他對我阿諛奉承，是居心叵測。
adv.
英英詞典釋義
Adjective
1. 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"