Synonyms and Antonyms of well-grounded
according to the rules of logic
- Counsel for the defense presented a well-grounded case for acquittal.
analytic (or analytical), coherent, consequent, good, logical, rational, reasonable, sensible, sound, valid, well-founded
fallacious, misleading, sophistic (or sophistical), specious
absurd, cockeyed, crazy, daffy, fatuous, half-baked, half-witted, harebrained, insane, loony (also looney), mad, nonsensical, nutty, preposterous, simpleminded, stupid, weak-minded, witless