[{"Bold_text": "adjective", "List Items": ["sound; just; well-founded:a valid reason.", "producing the desired result; effective:a valid antidote for gloom.", "having force, weight, or cogency; authoritative.Synonyms: cogent , substantial", "legally sound, effective, or binding; having legal force:a valid contract.", "Logic.(of an argument) so constructed that if the premises are jointly asserted, the conclusion cannot be denied without contradiction.Synonyms: convincing , logical", "Archaic.robust; well; healthy."]}]