from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A personality type characterized by an excessively positive disposition similar to, but more stable than, the hypomania of bipolar disorder.

from The Century Dictionary and Cyclopedia

  • n. Insanity marked by violence and an impulse to acts of cruelty.


From hyper- + -thymia. (Wiktionary)


  • Could Thassa somehow be gifted in this sense, or does she perhaps "suffer" from a rare condition known as hyperthymia

    California Literary Review

  • In "Generosity," which centers on the search for a happiness gene, a writing professor discovers that one of his students has hyperthymia, a rare trait that generates euphoria.

    Bringing Out the Big Guns

  • This resilience, I believe, grew out of his personality, which is a fine case example of hyperthymia.

    NYT > Home Page


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