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.