/ɜ:(r); US eər ||; ɝ/verb [I] (formal 正式) to be or do wrong; to make mistakes 犯错 err on the side of sth to do more of sth than is necessary in order to avoid the opposite happening 宁可…也不…: It is better to err on the side of caution (= it is better to be too careful rather than not careful enough). 宁可过于谨慎，也不掉以轻心。