You Collection, Upper Volume Radical: Speech (yán) Si Kangxi stroke count: 16 Page 1171, Entry 07 Pronounced si. According to the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), the meaning is to think. According to the Comprehensive Rhymes (Guangyun), to speak while thinking. Also, according to the Classified Compendium (Leipian), straightforward speech. Also, the appearance of being afraid. As in the Xunzi, specifically the Discussion of Military Affairs (Yibing Pian): The appearance of constant fear that the world will unite and crush oneself. Also, a personal name. As recorded in the History of Song (Songshi), Table of the Imperial Clan, mentions the Wuyi official Shi Si. Also, pronounced sai (rising tone). According to the Classified Compendium, to speak. Also, pronounced shai. According to the Explaining Graphs and Analyzing Characters, the meaning is the same. Also, according to the Classified Compendium, a slip of the tongue. Also, pronounced ai (level tone). According to the Classified Compendium, a term for addressing others. According to the Explaining Graphs and Analyzing Characters, originally written as the character for afraid. According to the Collection of Characters (Zihui), synonymous with the character for afraid.