commentator Meaning, Definition & Usage

  1. noun an expert who observes and comments on something
    observer.
  2. noun a writer who reports and analyzes events of the day
    reviewer.

WordNet

Com"men*ta`tor noun
Etymology
L. commentator: cf. F. commentateur.
Definitions
  1. One who writes a commentary or comments; an expositor; an annotator.
    The commentator's professed object is to explain, to enforce, to illustrate doctrines claimed as true. Whewell.

Webster 1913