slip (my) mind


1. forget something






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sorry, it totally slipped my mind!

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If something 'slips your mind', it means you forgot about it. You might use this expression to apologise for missing a meeting or for forgetting to do something. 'I'm sorry I didn't get around to giving you any feedback, it must have slipped my mind.' You can use this polite formal expression in social and professional contexts.

Check Icon Social Examples (Basic)

  1. I need to make a note of that guy's name or else it will slip my mind.
  2. I'm so sorry I didn't attend your party last night. It totally slipped my mind!

Check Icon Professional Examples (Basic)

  1. I know you needed that report on your desk by this morning, but I've been so snowed under with other things that it simply slipped my mind.
  2. I forgot I said I would go to the bank today. It totally slipped my mind.

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