Synonyms of 'specious'
The Duke was not convinced by such specious arguments.
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If something is deceptive, it encourages you to believe something which is not true.
Appearances can be deceptive.
If an idea, argument, or reason is fallacious, it is wrong because it is based on a fallacy.
Their argument is fallacious.
If you describe something as misleading, you mean that it gives you a wrong idea or impression.
The article contains several misleading statements.
Thesaurus for specious from the Collins English Thesaurus
Something that is specious seems to exist or be true, but is not real or true.