反常

unusual / abnormal

contrary / in reverse / inside out or upside down / to reverse / to return / to oppose / opposite / against / anti- / to rebel / to use analogy / instead / abbr. for 反切[fan3 qie4] phonetic system

surname Chang

always / ever / often / frequently / common / general / constant

complete change from the normal state (idiom); quite uncharacteristic / entirely outside the norm / out of character