- Definitions|1
- Thesaurus|52
- Abbreviations|0
| as | |
| coarse | |
| frumpish | |
| glowering | |
| glum | |
| grim | |
| grouchy | |
| growling | |
| gruff | |
| grumpy | |
| hoarse | |
| hollow | |
| morose | |
| rumbling | |
| scowling | |
| sepulchral | |
| sorts | |
| sulks |
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| APA | Smart Define. (2015). grum thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/grum/thesaurus/related |
| Chicago | Smart Define. 2015. "grum thesaurus" https://smartdefine.org/grum/thesaurus/related (accessed September 23, 2026). |
| Harvard | Smart Define 2015, grum thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/grum/thesaurus/related>. |
| MLA | Smart Define. "grum thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/grum/thesaurus/related> |