*deik-
“展示”的原始印欧语根,“庄严宣称”以及“与指向语言或物体有关的衍生词语”[Watkins]。
以下单词全部或部分来源于此词根: abdicate; abdication; addict; adjudge; apodictic; avenge; benediction; betoken; condition; contradict; contradiction; dedicate; deictic; deixis; dictate; diction; dictionary; dictum; digit; disk; ditto; ditty; edict; Eurydice; index; indicate; indication; indict; indiction; indictive; indite; interdict; judge; judicial; juridical; jurisdiction; malediction; malison; paradigm; policy(意思是 “书面保险协议”); preach; predicament; predicate; predict; prejudice; revenge; soi-disant; syndic; teach; tetchy; theodicy; toe; token; valediction; vendetta; verdict; veridical; vindicate; vindication; voir dire。
据表明其存在证据的梵语 dic- “指出,显示”; 希腊语 deiknynai “显示,证明”, dike “习俗,用法”; 拉丁语 dicere “说,讲述”, digitus “手指”,古高地德语 zeigon,现代德语 zeigen “展示”,古英语 teon “指控”, tæcan “教授”,都具有此词根的假定源头。