red or reddish, usually referring to someone's complexion; flushed
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Uses:
There's someone who's pleased with himself," she thought, as she saw a fat, rubicund gentleman coming towards her. He took her for an acquaintance, and lifted his glossy hat above his bald, glossy head, and then perceived his mistake.
Leo Tolstoy. Anna Karenina (Translated by Constance Garnett)
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This was the time for Wemmick to produce a little kettle, a tray of glasses, and a black bottle with a porcelain-topped cork, representing some clerical dignitary of a rubicund and social aspect.