Grave
Grave adjective - Not joking or playful in mood or manner.
Usage example: when I asked him how his dog was doing, he looked grave and said, “Not good”
Grim is a synonym for grave in serious topic. In some cases you can use "Grim" instead an adjective "Grave", when it comes to topics like solemn, unsmiling.
Grim
Grim adjective - Harsh and threatening in manner or appearance.
Usage example: a grim and short-tempered shopkeeper who didn't exactly invite friendly conversation
Grave is a synonym for grim in property topic. You can use "Grave" instead an adjective "Grim", if it concerns topics such as stern, solemn.
Mutual synonyms
Cite this Source
Grim and Grave. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/grave/grim
Grave & Grim. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/grave/grim>.
Grim or Grave. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/grave/grim.
Google Ngram Viewer shows how "grave" and "grim" have occurred on timeline