The authority of his voice is undermined by the smallness of his build.
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Related: undermine
Prev: But the 1980s brought new competition from Japanese film company Fuji Photo, which undermined Kodak by offering lower prices for film and photo supplies.
Next: Over the past year and a half, The Great Divide, a series in The New York Times, has presented a wide range of examples that undermine the notion that there are any truly fundamental laws of capitalism.