lacking in frankness, candor, or sincerity; falsely or hypocriticallyingenuous; insincere: Her excuse was rather disingenuous.
1645–55; dis-1 + ingenuous
• But it's disingenuous and a little facile to jump on him about this thing.
• Equating commercial advertising with churches' advertising is disingenuous.
• But it's only a moment, and a disingenuous one at that.
I would suggest that we add one more example sentence to that which was obtained from dictionary.com:
• Mr. Romney's claim that he needed to see ten years of tax returns for his potential presidential candidate to properly vet them while simultaneously refusing to release more than one year of his own (with a promise - yet unfulfilled - to release only one more), is disingenuous at best!
I was going to write more – but that seems to say it all!
Wherever you are today I hope you will refrain from being disingenuous!