Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

monograph, tract, tractate†, tractation†; discourse, memoir, disquisition, lecture, sermon, homily, pandect†; excursus. commentary, review, critique, criticism, article; leader, leading article; editorial; running commentary. investigation &c (inquiry) 461; study &c (consideration) 451; discussion &c (reasoning) 476; exposition &c (explanation) 522. commentator, critic, essayist, pamphleteer. V. expound upon a subject, dissert upon a subject†, descant upon a subject, write upon a subject, touch upon a subject; treat a subject, treat a subject thoroughly, treat of a subject, take up a subject, ventilate a subject, discuss a subject, deal with a subject, go into a subject, go into a subject at length, canvass a subject, handle a subject, do justice to a subject. hold forth [oral dissertation], discourse, delve into. Adj. discursive, discoursive†; disquisitionary†; expository.