English edit

Etymology edit

horizontal +‎ -ist

Noun edit

horizontalist (plural horizontalists)

  1. An advocate or believer in horizontalism.

Adjective edit

horizontalist (comparative more horizontalist, superlative most horizontalist)

  1. Relating to horizontalism.
    • 2023, Eleanor Catton, Birnam Wood, page 112:
      Meetings at Birnam Wood were broadly horizontalist. The role of facilitator was allocated on a roster—this time, to a sweet-tempered paediatric nurse named Katie Vander—and discussions proceeded through five set phases: