前缀：un-

【词根含义】：否定

【词根来源】：在希腊语中为a-, an-,拉丁语中为in-,哥特语为un-,古斯堪的纳维亚语为u-,古高地德语为un-,古英语为ne。

【同源单词】：unable, unalienable, unassuming, unbearable, unceasing

词根词缀：dic-, dict-

【来源及含义】Latin: talk, speak, say, tell, declare; to proclaim; to indicate

【相关词根词缀】Cross references of word families related directly, or indirectly, to: "talk, speak, speech; words, language; tongue, etc.": cit-; clam-; fa-; -farious; glosso-; glotto-; lalo-; linguo-; locu-; logo-; loqu-; mythico-; -ology; ora-; -phasia; -phemia; phon-; phras-; Quotes: Language,Part 1; Quotes: Language, Part 2; Quotes: Language, Part 3; serm-; tongue; voc-.

【同源单词】abdicable, abdicant, abdicant, abdicate, abdicate, abdication

词根词缀：-tion

【来源及含义】Latin: a suffix forming nouns from verbs of condition and action; an act or process: resumption, absorption; state or condition, redemption, exhaustion; something resulting from or otherwise related to an act or process, assumption, friction

【相关描述】This unit is presenting a small fraction of the hundreds of words ending with the suffix of -tion; however, there is a significant number of words which may help everyone have a better understanding and appreciation of the use of this element.

【同源单词】abduction, abjection, ablution, ablution, abolition, abruption