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mercurial

mer·cu·ri·al [ mər kyree əl ]

adjective

Definition:

1. lively and unpredictable: lively, witty, fast-talking, and likely to do the unexpected

2. containing mercury: containing or caused by mercury

noun (plural mer·cu·ri·als)

Definition:

medicine containing mercury: formerly, a drug or chemical preparation containing mercury

[Late 16th century. <Mercurial]

mer·cu·ri·al·i·ty [ mər kyree állətee ] noun

mer·cu·ri·al·ly [ mər kyree əlee ] adverb

mer·cu·ri·al·ness [ mər kyree əlnəss ] noun

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