bum note

noun — 2 senses

bum note

noun

1

Entertainment, Lifestyle, Music Derogatory, Slang A note that is played incorrectly.

2

Derogatory, Figuratively, Slang A social or conversational mistake; an awkward or inappropriate action.

'I'm going for a pint.' Declan paused on the way out. 'You really think Ethan's that good? There could be money in it?' He realised he had struck a bum note.2013, Alan Gibbons, Raining Fire:

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