SYN: Persist, insist, continue, keep on, be steadfast, hold out, [See CONTINUE].
— from A Complete Dictionary of Synonyms and Antonyms or, Synonyms and Words of Opposite Meaning by Samuel Fallows

Amongst other things they spoke of the middle ages: some praised that period as far more interesting, far more poetical than our own too sober present; indeed Councillor Knap defended this opinion so warmly, that the hostess declared immediately on his side, and both exerted themselves with unwearied eloquence.
— from Andersen's Fairy Tales by H. C. (Hans Christian) Andersen

Suddenly John stopped and said brusquely, "Let Sophy play, I cannot keep time with you."
— from The Lost Stradivarius by John Meade Falkner

“But this morning, just after you had been so severely punished, I could keep quiet no longer and expressed myself to General Surgoff.”
— from The Boy Allies in the Baltic; Or, Through Fields of Ice to Aid the Czar by Clair W. (Clair Wallace) Hayes

I have followed many a dim trail in dark forests, and this is so plain I could keep to it on a run if necessary.
— from Beyond the Frontier: A Romance of Early Days in the Middle West by Randall Parrish

"Don't be in such a hurry, Alison!" said the elder, somewhat pettishly; "I cannot keep up with you in this heat, and what will Miss Jane think if she happens to be at the window and sees you coming along at such a break-neck pace?"
— from A Hero of the Pen by E. Werner

“Had I sufficient pesos I could keep the pursuit well behind us forever.
— from Hearts of Three by Jack London

The corn so produced is called Kappsäd.
— from Lachesis Lapponica; Or, A Tour in Lapland, Volume 1 by Carl von Linné

He has stood there where you stand—there, with his name and his millions and his devotion—as white as your handkerchief, with hot tears in his eyes, and me ready to go down on my knees to him and say, ‘My own sweet prince, I could kiss the ground you tread on, but it is n’t decent that I should allow you to enter my house and expose yourself to these horrors again.’
— from Roderick Hudson by Henry James