记忆方法
双解例句
小知识
Something that is unprecedented is not known, experienced, or done before. If you've never gone on a family beach vacation but you're planning one now, you could refer to it as an unprecedented decision.
The root of this word is precedent, a noun referring to something done or said that is used as an example to be followed in the future. In law, a precedent is a legal decision that is used as a standard in future cases. So the adjective unprecedented, meaning “having no precedent,” was formed from the prefix un- “not,” the noun precedent, and the suffix –ed “having.”
实用短语
常用短语
单词用法
词根词缀
词根: ced
=go,表示”行走,前进”
adj.
antecedent 先行的;以前的antecede[v.先行,先于]+ent……的→adj.先行的;以前的
unprecedented 前所未有的un无+precedent[n.先例;惯例]+ed……的→无先例的
n.
precedent 先例;惯例precede[v.在先,优于]+ent→预先走的东西→先例
procedure 程序;手续pro在前+ced行走,前进+ure表名词→在前面走完的程序
v.
accede 答应,同意ac+ced行走,前进+e→和别人走在一起→答应
antecede 先行,先于ante前+ced行走,前进+e→走在前面→先行
concede 承认;容许;[比赛结束前]认输;退让con共同+ced行走,前进+e→共同向后走一步→让步
intercede 调停;仲裁inter在……中间+ced行走,前进+e→在二者中间走→调解
precede 在先,优于pre预先+ced行走,前进+e→预先走→优走
recede 撤回;交还[领土]re后+ced行走,前进+e→向后走→撤退
retrocede 交还, 归还retro向后+ced走+e→往后走→把……归还
secede 脱离;退出se分开+ced行走,前进+e→分开走→脱离
同义词
exceptional / extraordinary / amazing / unduplicated / signal / original / unique