junkie or junky/ʹjungki/ noun (pl -ies) (pl junkies)

• Martello tower
• marten
• martensite
• martial
• martial art
• martial law
• Martian
• martin
• martinet
• martingale
• martini
• Martiniquan
• Martinmas
• martlet
• martyr
• martyrize
• martyrology
• marvel
• marvellous
• marvel of Peru
• Marxism
• Marxism-Leninism
• marzipan
• Masai
• masala