gaffe or (rare) gaff /gaf/

A blunder

• a bit of all right
• a bit off
• a bit of fluff
• a bit of rough
• a bit of tail
• a bit on the side
• a bitter pill to swallow
• a bit thick
• abitur
• abiturient
• abiturients
• abject
• abjected
• abjecting
• abjection
• abjections
• abjectly
• abjectness
• abjectnesses
• abjects
• abjoint
• abjointed
• abjointing
• abjoints
• abjunction