They would discuss personalities, would shout over recollected good times, would slap each other on the back and laugh tirelessly.
"Sisters"
Kathleen Norris
All through the work of isolating and testing the blood fraction, Jay had worked tirelessly and unsparingly; scarcely sleeping, but brooding; silent, prone to fly into sudden savage rages, but painstaking.
"The Planet Savers"
Marion Zimmer Bradley
Soldiers put on shoes and canvased their brown hands in white cotton gloves, and military bands rehearsed tirelessly.
"The Missourian"
Eugene P. (Eugene Percy) Lyle