perseveringly

It is, writes Times theater critic Charles McNulty, a harmonizing with history that is “at once agonizingly harsh and perseveringly soulful.”

From Los Angeles Times ● Feb. 2, 2019

The bigger amazement is how they— and by extension we the audience — are able to harmonize with a history at once agonizingly harsh and perseveringly soulful.

From Los Angeles Times ● Feb. 1, 2019

But the old man sucked perseveringly at the bread between his toothless gums.

From "The Good Earth" by Pearl S. Buck

The result for which she had so ardently longed, so patiently waited, so perseveringly laboured, was attained at last.

From Garcia the Centenarian And His Times Being a Memoir of Manuel Garcia's Life and Labours for the Advancement of Music and Science by Mackinlay, M. (Malcolm) Sterling

At each tack of the steamer it blew out a whole row of variegated lamps and illuminations, which, however, were as perseveringly relit.

From Narrative of the Circumnavigation of the Globe by the Austrian Frigate Novara, Volume III (Commodore B. Von Wullerstorf-Urbair,) Undertaken by Order of the Imperial Government in the Years 1857, 1858, & 1859, Under the Immediate Auspices of His I. and R. Highness the Archduke Ferdinand Maximilian, Commander-In-Chief of the Austrian Navy. by Scherzer, Karl Ritter von