His eyes were a trifle heavy, and there was a grim tenacity in the lines of his mouth.

She supposed that a man like this, a warrior who hoped to prevail against the invading force from D'Hara, had to be a man of brute strength, iron command, and grim tenacity.

I stop holding on with grim tenacity and find I can balance on the runners and "surf" the ride.

"Throughout this very hazardous operation," his brigade commander reported, "Major Sanders set such a magnificent personal example of courage and grim tenacity of purpose that he inspired the whole force."

The daily swim had become an iron-cast habit for the six students; Launde Abbey didn't have any outdoor sport pitches or indoor games courts, so they clung to whatever activity they could make for themselves with a grim tenacity.

He battled furiously but futilely--with the grim tenacity of a bulldog those awful fingers were clinging to his throat.

The long car flared as it tore across Seventh Street, skidding around passing cars, Pitt fighting the wheel with grim tenacity.

We captured and enslaved only the scum of the race; the best of humankind died fighting with a grim tenacity that appalled us.

Charvanek, who handled Romulan Security with a grim tenacity and maddening incorruptibility that could teach even the Tal Shiar a few lessons.

In these passages the tone of the narrator's voice edges toward a sort of millennial spleen that is nicely balanced against the grim tenacity with which he clings to his hard-won, private idea of the purpose and meaning of art.