slip of the pen

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slip of the pen (plural slips of the pen)

1. (idiomatic) A mistake in handwriting.

   Synonyms: lapsus calami, writo

   • 1961 December, “New reading on railways: The South Eastern & Chatham Railway. By O. S. Nock”, in Trains Illustrated, page 768:

     There are one or two slips of the pen—L.S.W.R. trains did not run through Ludgate Hill, for instance—[...].

• Freudian slip
• slip of the tongue
• writo
• typo

• “slip of the pen”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.