The result was apt to be an irreducible combination of persons having no other quality in common than their abstinence from bridge, and the antagonisms developed in a group lacking the one taste which might have amalgamated them, were in this case aggravated by bad weather, and by the ill-concealed boredom of their host and hostess.
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Waste is down to an irreducible minimum.
a seemingly irreducible gulf between their viewpoints