Black bubbles? Nonsense! (7)

From Daily Telegraph Cryptic 31272, 4D

4D — Black bubbles? Nonsense! (7)BLATHER

  • Definition
    Definition found: 'Nonsense!' — A definition sits at one end of the clue, never the middle — which single word here reads as a plain synonym for the answer?
  • Wordplay
    Wordplay: Charade
  • Abbreviation
    Abbreviations spotted: 'Black' → B
  • Synonym
    Synonyms spotted: 'bubbles?' → LATHER
  • Assembly
    B + LATHER = BLATHER

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