词根:firm = strong

  来自拉丁语的firm 意为strong。同义词根有来自拉丁语的bil,fort/forc,rob,val/vail等。

  (*拉丁文firmus(=firm) —— 英文字根字典)

同源词:

1. infirmity (不强壮的状态in (=not) + firm(=strong))
  n.虚弱,体弱;疾病,病症(意志等的)薄弱
  infirm adj. 虚弱的;意志不坚定的
  infirmary n.医院;(学校或者机关的)所,医务室
  Despite Grandmother's physical infirmity,her mind is sharp as a tack. 奶奶尽管身体虚弱,头脑却非常敏捷。

2affirm
  v.坚称,断言;肯定,确认,证实 *af<ad(=to)
  affirmation n.断言;肯定,证实
  affirm that the news is true 坚称消息属实
  It may be safely affirmed that~ 可以肯定地说...
  The witness affirmed to the fact. 证人证明确是事实。

3. affirmative
  adj.肯定的;同意的 *af<ad(=not)
  affirmative action (=positive discrimination积极区别对待政策(对因种族、性别等原因受到歧视的群体等方面军给予特别照顾))
  affirmative answer 肯定的回答
  affirmative votes 赞成票
  affirmative side 赞成方

4. confirm
  v.加强(势力、权力等);证实;认可,批准;确认;[宗]给...施坚信礼 *con<com(=intensive)
  What you tell me confirms my suspicions. 你所说的证实了我的怀疑。
  The report of an earthquake in Japan has now been confirmed. 日本发生地震的报道已经被证实。
  confirm the treaty of Versailles 批准凡尔赛条约
  confirm a reservation 确认预订

5. confirmed
   adj.确定的,证实的;根深蒂固的;慢性的 *con<com(=intensive)
  confirmed drunkard  饮酒成癖的人
  confirmed disease 痛疾;慢性病
  confirmed report 可靠的报道

6. confirmation
  n.确定,确认,确证;认可,批准;坚信礼 *con<com(=intensive)
  in confirmation of 以证实...

7. firmament
  n.(the~)天空;苍天

8. disaffirm
  v.抗议;反驳;注销《dis- = not》