Boomers upset about king’s headwear (8)

From Times Cryptic 29569, 21A —

21A — Boomers upset about king’s headwear (8) — SOMBRERO

  • Definition
    Definition found: 'headwear' — Something you wear on your head — this one's wide-brimmed.
  • Indicator
    Indicator found: 'upset'
  • Operation
    'upset' signals a anagram operation
  • Fodder
    Fodder: 'Boomers king’s'
  • Abbreviation
    Abbreviations spotted: 'king’s' → R
  • Assembly
    R > BOOMERSR = SOMBRERO

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