noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A personality type characterized by an excessively positive disposition similar to, but more stable than hypomania. This temperament generally describes a person with high energy and enthusiasm for life activities, as opposed to dysthymia. uncountable, usually

Etymology

From hyper- + -thymia.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.