The phrase "affecting earnestness" is correct and usable in written English.
It can be used to describe a quality or demeanor that is both impactful and sincere, often in a context where someone is trying to convey genuine feelings or intentions.
Example: "Her speech was filled with affecting earnestness, capturing the audience's attention and empathy."
Alternatives: "touching sincerity" or "moving seriousness".
Maddi Chapin, 21, a student, was more soberly turned out in the tweed coat, wire-rimmed spectacles and bow tie of her character, the 11th Dr. Who, whom she described with affecting earnestness as "a very old soul in a very young body".
The Pangs had seen Raimi's work as kids in Hong Kong and loved it".The pacing, the pacing!" Oxide exclaimed, perhaps not surprisingly: much of Raimi's early work and all the "Evil Dead" films lurch wildly between real, sometimes affecting earnestness and pure clowning.
And if Mr. West's performance is especially affecting, it's partly because of the contrast of the excellent supporting cast, which includes Amanda Drew as his estranged wife, Martin Hutson as his gay roommate, Paul McGann as the roommate's new boyfriend and Penny Downie as a spinsterish academic of risible but genuine earnestness.
In his blue jeans and blue sneakers, with a pack of Marlboro Lights in the pocket of his knit shirt and a modified buzz cut, Mr. Fulks doesn't affect either the aw-shucks earnestness of mainstream Nashville or the hip, ragged antistyle style of the alt-country world.
But yeah, the seriousness and earnestness of that place and the Royal College of Art, where I went afterward, really affected me.
The sentiments are earnest, but earnestness has its price.
There is a lot of official earnestness, and it should strike you as hilarious.
It mocks hubris, affectation, and hypocrisy, but it also mocks originality, utopianism, and earnestness.
(Baldwin can be quite earnest, even as he keeps an ironic eye on his earnestness).
The earnestness was palpable.
