In Greek, λογικοφανής is a word that describes a person who spits out seemingly logical statements. It often has a negative connotation as it is targeted towards people who tend to fool the public with supposedly beautifully-constructed thoughts that sound convincing in our ears but are not necessarily accurate. The first word that comes to mind is deceptive, but it is not quite what I look for. Any thoughts?
The word you may want to consider is sophist. What they do is called sophistry or sophism.
- A paid teacher of philosophy and rhetoric in Greece in the Classical and Hellenistic periods, associated in popular thought with moral scepticism and specious reasoning.
1.1A person who reasons with clever but false arguments.
In modern usage, sophism, sophist and sophistry are used disparagingly. A sophism is a fallacious argument, especially one used deliberately to deceive. A sophist is a person who reasons with clever but fallacious and deceptive arguments.
A clever but false argument, especially one used deliberately to deceive.
- The use of clever but false arguments, especially with the intention of deceiving.
1.1 A fallacious argument.
If you are looking for the adjective, the word is sophistic, but I do not think it should be used for describing people, and it seems rare.
On the other hand, we have casuist
A person who uses clever but unsound reasoning, especially in relation to moral questions; a sophist.
How about specious?:
1 Superficially plausible, but actually wrong.
‘a specious argument’
More example sentences
1.1 Misleading in appearance, especially misleadingly attractive.
‘the music trade gives Golden Oldies a specious appearance of novelty’
If you are looking for a noun,
"a fallacy" comes to mind. The adjective being
"fallacious" ( a fallacious conclusion, a fallacious argument).
A fallacy is the use of invalid or otherwise faulty reasoning, or "wrong moves" in the construction of an argument. A fallacious argument may be deceptive by appearing to be better than it really is. From Wikipedia
fallacy - "an often plausible argument using false or invalid inference."
"The fallacy of their ideas about medicine soon became apparent."
"The once-common fallacy that girls just weren't any good at math."
A fallacy is reasoning that comes to a conclusion without the evidence to support it. This may have to do with pure logic, with the assumptions that the argument is based on, or with the way words are used, especially if they don't keep exactly the same meaning throughout the argument. There are many classic fallacies that occur again and again through the centuries and everywhere in the world. From MW
What is a word to describe one's thoughts that sound logical and reasonable but, in reality, they are not?
Those thoughts are illusional thoughts.
- An erroneous perception of reality.
- An erroneous concept or belief:
- The condition of being deceived by a false perception or belief.
- Something that is erroneously perceived or construed. (The free dictionary)
Illusional: marked by or producing illusion, unreal - lacking in reality or substance or genuineness; not corresponding to acknowledged facts or criteria.
- a false idea or conception; belief or opinion not in accord with the facts. a false appearance or deceptive impression of reality, a false or misleading perception or belief; delusion.
Example: he has the illusion that he is really clever.
- an unreal, deceptive, or misleading appearance or image.
Example: a large mirror giving the illusion of space in a small room
3a) a false perception, conception, or interpretation of what one sees, where one is, etc.
3b) the misleading image resulting in such a false impression. (From Collins English dictionary)
In the first meaning below.
verb (used with object), ra·tion·al·ized, ra·tion·al·iz·ing.
- to ascribe (one's acts, opinions, etc.) to causes that superficially seem reasonable and valid but that actually are unrelated to the true, possibly unconscious and often less creditable or agreeable causes.
- to remove unreasonable elements from.
- to make rational or conformable to reason.
- to treat or explain in a rational or rationalistic manner.
delusion ~ noun uncommon 1. (psychology) an erroneous belief that is held in the face of evidence to the contrary 2. a mistaken or unfounded opinion or idea e.g., he has delusions of competence; his dreams of vast wealth are a hallucination 3. the act of deluding; deception by creating illusory ideas
so delusional might be one possible word for which you're looking
logikos - logical
PHANE Meaning: "having the appearance of," from Greek -phanes,
plausible having an appearance of truth or reason; seemingly worthy of approval or acceptance; credible; believable: a plausible excuse; a plausible plot. well-spoken and apparently, but often deceptively, worthy of confidence or trust: a plausible commentator.
Plausibility reasoning in ancient Greece
During the fifth century B.C.E., judicial orators in Greek Sicily developed a method for successfully pleading their cases in such instances in which no eyewitnesses or written documents or other such direct evidence could be produced. They began to base their arguments on the internal or external probability or plausibility of their statements. This new way of arguing was commonly labeled with the Greek term eikós, a term that has been variously rendered as similarity, likelihood, probability or plausibility. The success of the argument depends on the oratorical skills of the speaker, arguments by eikós have often been accused of lack of truthfulness. Here is a classical example of argument by plausible reasoning presented by Aristotle in his Rhetoric:
"If the accused is not open to the charge – for instance if a weakling be tried for violent assault – the defence is that he was not likely (eikós) to do such a thing. But if he is open to the charge – that is, if he is a strong man – the defence is still that he was not likely (eikós) to do such a thing, since he could be sure that people would think he was likely (eikós) to do it."
The sophists, a sort of mendicant academicians were said to have been experts in this type of argumentation and they are said to have taught wealthy young Greeks these methods for a hefty fee. Plato and Aristotle strongly denounced these methods and the method came to acquire a lot of bad repute. Sophistic argumentation styles were equated with fallacious arguments.