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
Example Sentences
Your argument isn't very convincing. They make a convincing case for reform. There is no convincing evidence to support his theory.
Recent Examples on the WebRepublican candidates have some convincing to do among their base, as Democrats hold the early advantage in battleground Arizona. Victoria Balara, Fox News, 18 Aug. 2022 Blake Lively is on board with husband Ryan Reynolds' many ventures — even if some of them took a little convincing. Giovana Gelhoren, Peoplemag, 18 Aug. 2022 My boss agreed after many rounds of discussion and some convincing. Chris Lee, Forbes, 15 Aug. 2022 But as far as resumes go, Carr has some convincing to do. Lorenzo Reyes, USA TODAY, 24 July 2022 After some convincing, Ferguson made the move to L.A. to open up shop with Crew. Alex Vincent, Los Angeles Times, 22 July 2022 After some convincing, that two weeks turned into Priscilla slowly moving to Elvis's Memphis estate, Graceland. Chaise Sanders, Country Living, 24 June 2022 Adam's pajama look also came courtesy of Atelier Versace, a choice made for him by his future wife that took a little convincing. Leena Kim, Town & Country, 23 June 2022 Back in the summer of 2018, Tyrone Johnson had some convincing to do. Theo Mackie, The Arizona Republic, 20 June 2022 See More