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From smash +‎ -ing. As a synonym for wonderful, the term first appeared in early 20th-century USA, and possibly derives from the sense of smash used in smash hit and similar terms. Popular folk etymology connects the term to the broadly homophonous Irish is maith sin or Scottish Gaelic 's math sin ("that is good"), but this has been described as "improbable",[1] and does not appear in the etymological dictionaries.


  • IPA(key): /ˈsmæʃɪŋ/
  • (file)
  • Rhymes: -æʃɪŋ


smashing (comparative more smashing, superlative most smashing)

  1. Serving to smash (something).
    The boxer delivered a smashing blow to his opponent's head.
  2. (originally US, now British and Ireland) Wonderful, very good or impressive.
    We had a smashing time at the zoo.
    • 2010, Toby Whithouse, “The Vampires of Venice”, in Doctor Who, season 5, episode 6, spoken by Rory Williams (Arthur Darvill):
      Um, the reason for this call is because I haven’t told you for seven hours that I love you, which is a scandal! And even if we weren’t getting married tomorrow, I’d ask you to marry me anyway. Yes I would, because you are smashing!



smashing (plural smashings)

  1. Gerund: The action of the verb to smash.
    Some Greek dance is traditionally accompanied by the smashing of crockery.

Derived terms[edit]



  1. present participle and gerund of smash


  1. ^ 2004, T. P. Dolan, A Dictionary of Hiberno-English: The Irish Use of English, page 217