ultraleftist

[uhl-truh-lef-tist]
noun
  1. a supporter or advocate of ultraleft causes, goals, etc.

Origin of ultraleftist

First recorded in 1970–75; ultraleft + -ist
Related formsul·tra·left·ism, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018