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  1. (Britain, Australia) Sorry mate, I didn′t see you.
    • 2010, Matt Croucher, Flash Point, page 13,
      The motorist claimed Smidsy after the crash — ‘Sorry mate I didn't see you’.

Usage notes[edit]

The acronym is used by motorcyclists and cyclists in reference to traffic collisions in which the driver of a car or larger vehicle claims not to have noticed a two-wheel biker. It is usually derogatory, in that the claim is often that the driver was not at fault (when he/she patently was). SMIDSY was also used as a title of a BBC series on road safety broadcast in the 1980s.

A related usage by the UK government is LBFTS(looked but failed to see).[1]

See also[edit]


  1. ^ 2004, Department for Transport, Review of the ’looked but failed to see’ accident causation factor