Definition of grumpiness:
Synonyms for grumpiness:
sullenness (part of speech: noun)
- "The Girl Aviators and the Phantom Airship", Margaret Burnham.
If Thaddeus felt rested, everything in the world could go wrong and he would smile as sweetly as ever; but with the slightest trace of weariness in his system the smile would fade, wrinkles would gather on his forehead, and grumpiness set in whether things were right or wrong.- "Paste Jewels", John Kendrick Bangs.
- "Viviette", William J. Locke.