on; on top; upon; first (of two parts); previous or last (week etc); upper; higher; above; previous; to climb; to go into; above; to go up; to attend (class or university); third tone of putonghua[cedict]
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 phonetic system[cedict]