Definition of "overserious" [overserious]

• Excessively serious (adjective)

WordNet. Princeton University. 2010.

• "One, it underlined how weirdly obsessed and overserious NBA fans are about the league's all-time pecking order—witness the recent howling when Dallas's coach dared suggest that Dirk Nowitzki belonged in the greatest-ever Top 10, as if there was the possibility the Martian All-Stars might arrive and our planet would get hammered in the low post because it opted for Nowitzki over Hakeem Olajuwon."
• "What Dreams May Come was a beautiful but deeply overserious meditation on the personal nature of heaven and hell, by Peter Jackson's countryman Vincent Ward."
• "But she had a radiant smile—not so common among overserious Iranian politicians—and a Nokia mobile phone cord clipped beneath her chin, for constant calling."