... “What did you say?” said the duke, haughtily, thoroughly roused by this insidious jest... 
Alexandre Dumas, Pere 「Ten Years Later」
...May they view with theeye of an eagle and the wisdom of the serpentthe insidious encroachments that are thusmaking on our colonial markets!!...
Abd Salam Shabeeny 「An Account of Timbuctoo and Housa Territories in the Interior of Africa」
...Out of a herd of 100 belonging to this man, 70 were affected, and the letteremphasizes the insidious character of the onset...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
... Certainly no foe will break in through the double rampart; but he will make an insidious attack from the rear...
J. Henri Fabre 「Bramble-bees and Others」
...They would perish on their insidious ribbon if the disorder ofthe nocturnal encampments and the halts due to fatigue did not cast afew threads outside the circular path...
J. H. Fabre 「The Wonders of Instinct」
...He isas tall as the lion, but not quite so powerful; he is, however, moreagile, more graceful, and more insidious...
R. Lee 「Anecdotes of the Habits and Instinct of Animals」
...In Galileo's it was due to a more insidious cause, tounderstand which cause aright we must remember the political divisionsof Italy at that date...
Oliver Lodge 「Pioneers of Science」
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