epochful

English

Etymology

From epoch +‎ -ful.

Adjective

epochful (not comparable)

1. (of an event) important, momentous.
   • 1907, Granville Stanley Hall, Youth: Its Education, Regimen, and Hygiene, page 341:

     First, an habitually good child sometimes has a saturnalia of defiance and disobedience; a series of insubordinate acts are suddenly committed which really mark the first sudden epochful and belated birth of the instinct of independence and self-regulation, on which his future manliness will depend.

   • 2003, William Sweet, Mark Spencer, Race, Gender, And Supremacy, A&C Black, →ISBN, page 209:

     This makes the end of the century epochful and momentous.

   • 2013, G. Stanley Hall, Adolescence - Its Psychology and Its Relations to Physiology, Anthropology, Sociology, Sex, Crime, and Religion (1931), Read Books Ltd, →ISBN:

     Kaes and Vulpius are in impressive agreement that the age of the later teens is epochful for the development of the middle layer, which then begins a new and prolonged period of growth.