[f. TIRE v.1 + -LESS.] Untiring, indefatigable. a. Of persons (or their attributes) or other agents.

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1591.  Sylvester, Du Bartas, I. iv. 597. To sing the swiftness of thy tyer-less Teem.

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1827.  Willis, Healing Daughter Jairus, 13. The same loved, tireless watcher.

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1867.  H. C. Lea, Sacerdot. Celibacy., 70. The tireless pen of St. Jerome was called into requisition.

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1884.  R. Bridges, Prometh. Firegiver, 195. Attending with tireless ears.

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1887.  G. Hooper, Campaign Sedan, 280. Their soldiers … seemed to be tireless, for they never halted.

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  b.  Of qualities, actions, etc.

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a. 1826.  Heber, Transl. Pindar, iv. 1. Oh! urging on the tireless speed Of Thunder’s elemental steed.

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1859.  Times, 31 March, 10/2. Nothing can give our men the tireless elasticity of these Mahrattas. Ibid. (1889), 10 Aug., 9/1. With that tireless persistency which they usually display.

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