gaffe or (rare) gaff /gaf/

A blunder

• branchiopod
• Branchiopoda
• branchiopods
• branchless
• branchlet
• branchlets
• branch line
• branch lines
• branch officer
• branch officers
• branch out
• branch-pilot
• branch-pilots
• branch water
• branch waters
• branch-work
• branchy
• brand
• brandade
• brandades
• brand awareness
• branded
• branded goods
• brander
• brandered