gaffe or (rare) gaff /gaf/

A blunder

• unreasons
• unreave
• unreaved
• unreaves
• unreaving
• unrebated
• unrebuked
• unrecallable
• unrecalled
• unrecalling
• unrecapturable
• unreceipted
• unreceived
• unreceptive
• unreciprocated
• unrecked
• unreckonable
• unreckoned
• unreclaimable
• unreclaimably
• unreclaimed
• unrecognisable
• unrecognisably
• unrecognised
• unrecognising