Synonyms of the word

sophistical

• adj. Pertaining to a sophist or sophistry.
• adj. Fallacious, misleading or incorrect in logic or reasoning, especially intentionally.

invalid

• adj. Not valid; not true, correct, acceptable or appropriate.
• n. (dated, sometimes offensive) Any person with a disability or illness.
• n. (dated, sometimes offensive) A person who is confined to home or bed because of illness, disability or…
• n. (archaic) A disabled member of the armed forces; one unfit for active duty due to injury.
• adj. Intended for use by an invalid.
• v. (Britain) To exempt from duty because of injury or ill health.

sophistic

• adj. Pertaining to sophists.
• adj. Sophistical.