English

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Etymology

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betraying +‎ -ly

Adverb

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betrayingly (comparative more betrayingly, superlative most betrayingly)

  1. In a way that betrays or reveals.
    • 2007, Kate Walker, Sicilian Husband, Blackmailed Bride, page 130:
      She hated the way that her voice croaked betrayingly and reached for the glass of wine that she had brought out with her, praying he would take her reaction as simply the effects of the sun.