1. In a manner disapproved or not allowed by custom
   - illegitimately 
2. In an illegal manner
   - illegally, lawlessly

See also: illicit

Antonym: licitly

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• Dexedrine
• Dexone
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• dexterity
• dexterous
• dexterously
• dexterousness
• dextral
• dextrality
• dextran
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• dextroamphetamine sulphate
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• dextroglucose
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• dextrorotation
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• DFLP
• dg