gaffe or (rare) gaff /gaf/

A blunder

• masticating
• mastication
• mastications
• masticator
• masticatories
• masticators
• masticatory
• mastich
• mastichs
• masticot
• mastics
• mastier
• mastiest
• mastiff
• mastiffs
• Mastigophora
• mastigophoran
• mastigophorans
• mastigophoric
• mastigophorous
• masting
• mastitis
• mastitises
• mastless
• mastodon