The phrase "a more grave" is not correct in standard English usage.
The correct form would be "graver" when comparing the severity of something.
Example: "The situation has become graver since the last report."
Alternatives: "more serious" or "more severe."
Heavy braking could cause a pet to slide off the seat or, in a more grave scenario, an air-bag deployment could seriously injure or kill the animal.
In the 1980s, a more grave and reflective tone came over his work, and the echoes of music of the past became more overt - something that many critics, missing the exuberant complexity of his earlier works, held against him.
He undergoes a torturous hazing period wherein frat brothers proudly compare their abuses to that of Guantánamo guards, but when a more grave tragedy hits the group, the upperclassmen have to focus less on brotherhood and more on protecting the booze-soaked fiefdom they've established for themselves.
"But in order to make it a little more serious, a little more grave, I'm going to put it on the cellos and bring it down an octave".
The undeserved arrest of journalists in Ferguson does not point to a situation more grave than one in which a young, unarmed black man is executed by cops, nor one in which people protesting that execution meet a military-style crackdown.
The incident we're talking about now is of a much more grave and broader scale, and merits a response accordingly".
Maybe he did something that wasn't quite right, but he was doing it to prevent something that was a lot more grave," Mr. Gillot said, insisting that the former butler had not received any money for the recordings.
Yes, this humor is a little more grave than dead parrots who were never alive and the Ministry of Silly Walks, but the line "Nobody expects the Spanish Inquisition" may come to mind.
To shout Jesus Christ! as you stubbed your toe was a far more grave insult to the common decency than to say fuck.
But the inspector general, Nikki L. Tinsley, also directly addressed what has become an even more grave crisis for the agency -- gnawing public cynicism and doubt about its performance after the attack.
Again, the rationale is not ridiculous: a lie is more grave than an untruth, which can be merely a mistaken conviction, and it implies conscious intention to deceive rather than inward-turning self-deception.
