frowning + -ly
frowningly (comparative more frowningly, superlative most frowningly)
- While or as if frowning
1907, Erasmus W. Jones, The Young Captives:
- "And by what name is he known?" frowningly inquired the king.
1909, Ralph Henry Barbour, The Lilac Girl:
- "I'm sorry to hear you say that," said Wade, frowningly.
1913, Ethel May Dell, The Rocks of Valpre:
- She looked at him frowningly.