Zi Collection, Page Position: Upper, Radical: Person (rén), Page 5, Entry 02
Pronounced ruì. Also pronounced ruì. Same pronunciation as "nà". Meaning "inner". Another explanation: when a person's heart is shallow and their speech is frivolous, it is called "duò".
Xu Collection, Middle Volume, Radical: Person (rén), Page 476, Entry 09
Pronounced huì. The meaning is the same.