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• r  with a frown; while frowning
  he looked at her frowningly

• The Vicious Circle is neither weighty nor frowningly significant, but it is about people who were intensely and hilariously alive, many of them brilliant, most of them naturals.
• It may be pounced on frowningly and all its details subjected to legalistic analysis.
• Long and frowningly he gazed at the signatures, wondered if he had been the victim of a practical joker.