...More than half self-hypnotized into a belief in his owncharlatanry he faced this new demon who threatened to undermine hisancient and lucrative profession... 
Edgar Rice Burroughs 「Jungle Tales of Tarzan」
...For a character such as this to meetwith harsh treatment, much less cruelty,was, if not to ruin it completely, at leastto undermine all confidence...
Major Gambier-Parry 「'Murphy'」
...They can undermine such cliffsindeed, and then grind the fragments to powder, but their direct actionis limited...
Oliver Lodge 「Pioneers of Science」
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Fleetwood audacity fife
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