from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Appealing to the intellect or powers of reasoning; convincing: a cogent argument. See Synonyms at valid.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Reasonable and convincing; based on evidence.
  • adj. Appealing to the intellect or powers of reasoning.
  • adj. Forcefully persuasive.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Compelling, in a physical sense; powerful.
  • adj. Having the power to compel conviction or move the will; constraining; conclusive; forcible; powerful; not easily reasisted.

from The Century Dictionary and Cyclopedia

  • Compelling by physical force; potent; irresistible by physical means.
  • Compelling assent or conviction; appealing powerfully to the intellect or moral sense; not easily denied or refuted: as, a cogent reason or argument.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. powerfully persuasive


Latin cōgēns, cōgent-, present participle of cōgere, to force : co-, co- + agere, to drive; see ag- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin cōgēns, present active participle of cōgō ("drive together, compel"), from + agō ("drive"). (Wiktionary)



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