词根：sever = serious

  来源于拉丁语的sever 意为 serious,earnest,to cut。

同源词：

1. asseverate（使变得非常深刻和严肃 as<ad(=to,intensive) + sever(=serious)）
  vt.断言
  asseveration n.断言
  The professor asseverated that more than half the students had cheated. 教授断言一半以上的学生都作弊了。

2. persevere（从头到尾始终非常严肃 per(through,throughout) + sever(=serious)）
  vi. in + sth 坚持不解；（辩论中）固执已见
  perseverance n.忍耐，坚持
  persevering adj.有毅力的,锲而不舍的；固执的
  It's important to persevere,especially when you feel like quitting. 坚持不解很重要，尤其是当你想放弃的时候。

3. severe
  adj.严重的；剧烈的；严格的，苛刻的 *sever(=serious)

4. dissever
  v.（使）分离；（使）分裂 *dis(=away),sever(=cut)

5. sever
  v.切断，割断；中断；断绝；（使）分隔，（使）分离 *sever (=cut)

6. severance
  n.割断，断绝；分离，隔离 *sever(=cut)
  severance payment 解雇金，离职金
  severance of diplomatic relations/of communications 断绝外交关系/通信中断

词根词缀：ferv-

【来源及含义】Latin: to boil; hot; to begin to boil, to be hot; deeply earnest; ardent

【相关词根词缀】 Related "heat, hot" word units: pyreto-; thermo-. Related "bubble" word unit: ebulli-.

【同源单词】effervesce, effervescence, effervescent, effervescible, effervescing, effervescingly

词根词缀：pray, preca-

【来源及含义】Latin: to ask, to entreat; ask earnestly, entreaty, beg; request, petition, pray, prayer

【同源单词】deprecate, deprecation, deprecative, deprecatory, imprecate, imprecation

词根词缀：solemn-, solemni-

【来源及含义】Latin: serious, earnest, sacred, holy; dignified with formality at a ceremonious service or as a religious devotion

【同源单词】solemn, solemness or solemnness, solemnity, solemnization, solemnize, solemnizer