father-in-lawnoun (pl fathers-in-law)

• much less
• muchness
• much of a muchness
• mucilage
• mucilaginous
• muck
• muck about
• muck around
• mucker
• muck in
• muckle
• muck out
• muckrake
• mucksweat
• muck up
• mucoprotein
• mucosa
• mucous
• mucous membrane
• mucus
• mud
• mudbank
• mudbath
• muddle
• muddleheaded