the mind > mental capacity > knowledge > conformity with what is known, truth > disregard for truth, falsehood > error in belief or opinion > believe or opine wrongly [verb (intransitive)] (5)
intransitive. To wander, go astray; to err, be deluded.
To go wrong in judgement or opinion: to make mistakes, blunder. Of a formula, statement, etc.: To be incorrect.
intransitive. To believe falsely; to hold an erroneous or unorthodox belief. Now rare.
transitive. To form an unfavourable judgement of, think evil of; to censure. Obsolete.