"To get their own bread they must overdose the king’s lieges; and that’s a bad sort of treason, Mr. Mawmsey—undermines the constitution in a fatal way."
If the truth should be that some undermining disease was at work within him, there might be large opportunity for some people to be the happier when he was gone; and if one of those people should be Will Ladislaw, Mr. Casaubon objected so strongly that it seemed as if the annoyance would make part of his disembodied existence.
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Show samples from other sources
Her father had a way of undermining his sister’s lectures on the innate superiority of any given Finch: he always told his daughter the rest of it, quietly and solemnly, but Jean Louise sometimes thought she detected an unmistakably profane glint in Atticus Finch’s eyes, or was it merely the light hitting his glasses?
Harper Lee -- Go Set a Watchman
He cocked his head, trying on his "I’m so wholesome" routine, but his bloodshot eyes undermined his efforts.