Doctor backed nonsense by opening speaker going on and on (10)

26A — Doctor backed nonsense by opening speaker going on and on (10) — MOTORMOUTH

• Definition
  Definition found: 'going on and on' — The definition is the last four words describing endless talk. Show hint
• Indicator
  Indicator found: 'backed' Show hint
• Operation
  'backed' signals a reversal operation
• Fodder
  Fodder: 'nonsense'
• Abbreviation
  Abbreviations spotted: 'Doctor' → MO Show hint
• Synonym
  Synonyms spotted: 'nonsense' → ROT Show hint
• Synonym
  Synonyms spotted: 'opening speaker' → MOUTH Show hint
• Assembly
  MO + (ROT > TOR) + MOUTH = MOTORMOUTH

Try this clue in the trainer →