Definition of worst :
1. Bad, evil, or pernicious, in the highest degree, whether in a physical or moral sense. See Worse.
2. That which is most bad or evil; the most severe, pernicious, calamitous, or wicked state or degree.
3. To gain advantage over, in contest or competition; to get the better of; to defeat; to overthrow; to discomfit.
4. To grow worse; to deteriorate.
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