| sophistical(adjective, mad, unreasonable, irrational, trifling) |
| fallacious(adjective, correct, wrong, false, true) |
| specious(adjective, correct, foolish, true, unreasonable) |
| invalid(adjective, correct, foolish, true, unreasonable) |
| misleading(adjective, mad, unreasonable, irrational, fallacious) |
| deceptive(adjective, mad, unreasonable, irrational, fallacious) |
| false(adjective, correct, true, fallacious) |
| illogical(adjective, correct, foolish, sense, true) |
| irrational(adjective, foolish, mad, unreasonable, senseless) |
| unsound(adjective, correct, foolish, true, unreasonable) |
| mad(adjective, foolish, unreasonable, irrational, worthless) |
| unreasonable(adjective, foolish, mad, irrational, worthless) |
| groundless(adjective, foolish, unreasonable, irrational, illogical) |
| reasonless(adjective, foolish, mad, unreasonable, irrational) |
| baseless(adjective, foolish, unreasonable, worthless, unacceptable) |
| captious |
| casuistic |
| casuistical |
| circular |
| fraudulent(adjective, mad, unreasonable, irrational, fallacious) |