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Adjective: slap-up  'slap,úp
Usage: informal
  1. Excellent
    "he did a slap-up job";
    - bang-up [N. Amer, informal], bully [informal], corking [Brit, informal], cracking [Brit, informal], dandy, great, groovy [informal], keen, neat, nifty [informal], not bad [informal], peachy, swell [informal], smashing [Brit, informal], old, not half bad [informal], grouse [Austral, NZ, informal], ripper [Austral, informal], lovely
  2. [Brit, informal] (of a meal) excellent and lavish

See also: good, lavish, lucullan, plush, plushy