An expert who observes and comments on something.

synonym: observer.

Roget 595: dissertation, treatise, essay; thesis, theme; monograph, tract, tractate^†, tractation^†; discourse, memoir, disquisition, lecture, sermon, homily, pandect^†; excursus.    commentary, review, critique, criticism, article; leader, leading article; editorial; running commentary.    investigation etc. (inquiry) 461; study etc. (consideration) 451; discussion etc. (reasoning) 476; exposition etc. (explanation) 522.    commentator, critic, essayist, pamphleteer.    ... show more

Roget 524: interpreter; expositor, expounder, exponent, explainer; demonstrator.    scholiast, commentator, annotator; metaphrast^†, paraphrast^†; glossarist^†, prolocutor.    spokesman, speaker, mouthpiece.    dragoman, courier, valet de place, cicerone, showman; oneirocritic^†; (Edipus; oracle) &c.. 513 ... show more

Dutch: observant, observator, waarnemer
Polish: obserwator

A writer who reports and analyzes events of the day.

synonym: reviewer.

Roget 480: result, conclusion, upshot; deduction, inference, ergotism [Med.]; illation; corollary, porism^†; moral.    estimation, valuation, appreciation, judication^†; dijudication^†, adjudication; arbitrament, arbitrement^†, arbitration; assessment, ponderation^†; valorization.    award, estimate; review, criticism, critique, notice, report.    decision, determination, judgment, finding, verdict, sentence, decree; findings of fact; findings of law; res judicata [Lat.].    plebiscite, voice, casting vote; vote etc. (choice) 609; opinion etc. (belief) 484; good judgment etc. (wisdom) 498.    judge, umpire; arbiter, arbitrator; asessor, referee.    censor, reviewer, critic; connoisseur; commentator etc. 524; inspector, inspecting officer.    twenty-twenty hindsight [judgment after the fact]; armchair general, monday morning quarterback.    ... show more