...Our army was constantly weakening, and the enemy becoming dailymore enterprising... 
George Grote 「The Two Great Retreats of History」
...That eased my mind, and I started off for Masterton, who was in greater straitsthan ever, for the enemy seemed to be weakening on the river bank and puttinghis main strength in against our right...
John Buchan 「Mr. Standfast」
...At the same time, European interest inthe question showed some signs of weakening, and no decidedaction was taken...
W. E. B. Du Bois 「The Suppression of the African Slave Trade to the United States of America」
...I felt much refreshed, and could then realize and meditate on the weakening effects of the fever...
David Livingstone 「Missionary Travels and Researches in South Africa」
...To obviate this the smith removes the toewith the rasp, thus weakening the horn at the very place where it isrequired to be strong...
Joshua A. Nunn 「Notes on Stable Management in India and the Colonies」
...The loss of sap together withthe poisoning effect of the bite causesthe weakening of the plant or leaf withits ultimate death if feeding continues...
Leonard Haseman 「An Elementary Study of Insects」
...The octopuswas in its death throes, weakening steadily—but just as steadily thewater poured in and rose up the sides of its body...
Various 「Astounding Stories, February, 1931」
...The violet heat ray kept fingering hungrily on their outer hull, andevery man knew that the plates were weakening under the steady strain,which was only lessened by the NX-1's constant zigzagging...
Various 「Astounding Stories, February, 1931」
...I felt him weakening at last...
Various 「Astounding Stories, June, 1931」
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