Meaning of QUICKSILVER(A)

WordNet Dictionary
	Definition:		[adj]  liable to sudden unpredictable change; "erratic behavior"; "fickle weather"; "mercurial twists of temperament"; "a quicksilver character, cool and willful at one moment, utterly fragile the next"
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	Synonyms:		changeable, changeful, erratic, fickle, mercurial