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

See also: illicit

Antonym: licitly

• nascent
• NASDAQ
• Naseby
• Nash
• Nash equilibrium
• Nashville
• nasion
• nasofrontal
• nasofrontal vein
• nasogastric feeding
• nasolacrimal duct
• nasopharyngeal
• nasopharyngeal leishmaniasis
• nasopharynx
• nasotracheal tube
• Nassau
• Nasser
• Nast
• nastic
• record
• record album
• record book
• record changer
• record company
• record cover