[反, fǎnㄈㄢˇ] 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, See Also: 反切#1006
[滚瓜烂熟 / 滾瓜爛熟, gǔn guā làn shúㄍㄨㄣˇ ㄍㄨㄚ ㄌㄢˋ ㄕㄨˊ] lit. ripe as a melon that rolls from its vine (成语 saw); fig. to know fluently; to know sth inside-out; to know sth by heart#73694