sobersidedness
/ˈsoʊbərˌsaɪdɪdnəs/
noun
- The quality of being serious, solemn, and not easily amused or excited.
- The sobersidedness of the memorial service helped everyone reflect quietly.
- Her sobersidedness made her a good choice for the role of judge in the school debate.
- Despite the party atmosphere, his natural sobersidedness kept him from joining in the games.