A cogent argument is one that really drives its point home because it is clear, coherent, and readily understandable, and perhaps also because of the etymological history of cogent. Cogent comes from the Latin verb cogere, meaning “to drive or force together.” Something described as cogent fuses thoughts and ideas into a meaningful whole that others can readily grasp and accept. A cogent explanation is a convincing one, and cogent analysis has us nodding along because it is clear and pertinent. Cogere was formed in Latin by combining the prefix co- with the verb agere, “to drive, lead, or act,” a root which is also the source of our familiar noun agent. Handily enough, one definition of agent is “a means or instrument by which a guiding intelligence achieves a result.” It follows logically then that cogency is often a worthwhile agent, indeed.
valid implies being supported by objective truth or generally accepted authority.
a valid reason for being absent
a valid marriage
sound implies a basis of flawless reasoning or of solid grounds.
a sound proposal for reviving the economy
cogent may stress either weight of sound argument and evidence or lucidity of presentation.
the prosecutor's cogent summation won over the jury
convincing suggests a power to overcome doubt, opposition, or reluctance to accept.
a convincing argument for welfare reform
telling stresses an immediate and crucial effect striking at the heart of a matter.
a telling example of bureaucratic waste
Examples of cogent in a Sentence
… Honeyboy Edwards provides a cogent analysis of the shift within the blues over the years …—David Hajdu, Mother Jones, September/October 2003Your article provides cogent reading.—Mario Cuomo, letterU.S. News & World Report, 23 Mar. 1992Your arguments, whether or not one agrees with them, are generally cogent, and at times elegantly expressed.—Willard R. Espy, letterWall Street Journal, 24 Apr. 1990The author … makes a cogent and finely nuanced case for the wisdom—indeed, the necessity of this vision.—Marian Sandmaier, New York Times Book Review, 8 Feb. 1987
the results of the DNA fingerprinting were the most cogent evidence for acquittal
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Then comes the intensive work of assessing studies’ quality, extracting relevant data from works that make the cut, analyzing data to glean insights, and writing a cogent narrative that sums up the past while looking to the future.—IEEE Spectrum, 18 Dec. 2024 Especially cogent commentaries came from two people profoundly disappointed with the outcome.—Orlando Sentinel and South Florida Sun Sentinel Editorial Boards, Orlando Sentinel, 11 Nov. 2024 While there is a cogent argument to be made that tvOS is the most accessible platform, Apple TV, like everything else Apple makes, isn’t inexpensive.—Steven Aquino, Forbes, 10 Oct. 2024 Amid its frenzied storytelling, the film offers a cogent theory of modern masculinity: Men suck at communicating.—Stephen Kearse, The Atlantic, 15 Oct. 2024 See all Example Sentences for cogent
Word History
Etymology
borrowed from Latin cōgent-, cōgens, present participle of cōgere "to drive together, gather, compress, force, compel," from co-, variant before a vowel and h of com-com- + agere "to drive (cattle), be in motion, do" — more at agent
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