The phrase "less than truthful" is correct and can be used in written English.
This phrase can be used to indicate that someone is not telling the truth or is being untruthful. Example: After the interrogation, it became apparent that the suspect was being less than truthful about his whereabouts.
She also is known as the upholder of truth, and in everyday situations those suspected of being less than truthful are challenged to touch the tip of their tongue to the earth as evidence of their honesty.
It's never good to be less than truthful under her gaze.
This being so, I would feel less than truthful if I ticked "no religion".
"If he's saying he didn't know about the Reynolds money, he's been less than truthful".
It sounds as if Senator Burris was less than truthful when previously asked about this matter".
So what can be the appeal of this less than truthful analogy?
Mr. Greenland first came to the attention of the general public amid the fledgling consumer movement of early 1970s, when he began speaking out on what he saw as entrenched, less-than-truthful practices in advertising.
In early 2000, prompted by Putin's candidacy for the presidency, and incensed by his own less-than-truthful statements about his role in the meat scandal, Salye decided to speak out.
But I suspect that the dishonesty that is being uncovered in a study such as this — and frankly, I was amazed that the number of less-than-truthful instances was so low — reveals more about the diagnosis of being human than anything else.
But eventually some of the breeders became less-than-truthful about their pigs' genes, and unsuspecting customers doled out thousands on cute piglets, only to see them grow into huge porkers.
Finally, there are a massive number of online reviews, and fake reviews are usually less frequent than truthful ones, resulting in highly imbalanced datasets [44].
