词根：mat = ripe

  来自拉丁语的mat 意为ripe。


同源词：

1. premature（在成熟之前的pre(=before) + mat(=ripe)）
  adj.（做法等）不成熟的；太早的，不到期的；早产的
  It would be premature to fire her;she's still learning her job.解雇她时机尚早，她还在熟悉工作。

2. immature
  adj.未成熟的，发育未全的 *im<in(=not)
  immaturity n.未成熟（状态）；未成年
  immature girl尚年幼的少女
  immature minds of young children 儿童未成熟的心智

3. mature
  adj.成熟的；酿熟的；慎重的；周到的：（票据）到支付日期的 v.使成熟；使长成；（票据）到期；酿成
  mature woman 成熟的女人
  mature plans 慎重的计划
  This wine has not matured properly.葡萄酒还没有酿好。

4. maturity
  n.成熟；（票据的）到期
  come to /reach maturity 成熟

5. maturate
  v.成熟；化脓
  maturation n.成熟；化脓

词根：propr, proper, propri = proper（适当的）, one's own（自己

  词根来自拉丁语的propr 意为one's own。
  （*拉丁文proprius(=proper,own)——英文字根字典）

同源词：

1. propriety （自身所固有的性质propr(=one's own)）
  n.（行为等的）得体；妥当；适当；礼貌；(pl.)礼仪，礼节
  proper adj. 合适的，妥当；有礼貌的；本身的
  properly adv.合适地；有礼貌地；彻底地
  proprietor n.所有者；经营者；房东
  proprietorship n.所有权《-ship = 抽象名词后缀》
  I question the propriety of his promoting his own son to V.P. at such an early age. 我怀疑他将自己如此年轻的儿子提升为副总裁是否妥当。

2. appropriate
  v.占用，挪用，盗用；拨出（款项等）
  adj.适合的，适当的 *ap < ad(=to,near)
  Don't appropriate other's ideas. 不要盗用别人的见解。
  appropriate $500,000 for the new school buildings 为建新校舍拨款50万美元
  The legislature appropriated the funds for the university.州议会为那所大学拨了款。
  Sports clothes are not appropriate for a formal wedding.运动服不适合正式的婚礼。
 
3. appropriation
  n.私用，挪用（资金）；拨给的费用 *ap<ad(=to,near)
  make an appropriation for payment of debts 为了偿还债务而支出

4. expropriate
  v.没收（财产）；征用（土地等的）使用权；夺取所有权 *ex(=out,away)
  expropriation n.没收；征用

5. impropriety
  n.不适当；不正当的行为；错误的词句《im- = in- =not》

6. misappropriate
  v.误用；侵占；盗用（不当地使用）《mis- = wrong》
  misappropriation n.误用；侵占；盗用

词根词缀：iso-, is-

【来源及含义】Greek: equal; by extension: same, similar, alike; normally used as a prefix

【相关描述】Used in numerous terms, nearly all scientific; denoting: equality, similarity, uniformity, or identity; the second element being properly and usually of Greek origin, rarely of Latin [the proper prefix in the latter case being equi-]. In biology, denoting for or from different individuals of the same species). For a large list of iso- opposites or antonyms, see aniso-.

【相关词根词缀】 Inter-related cross references, directly or indirectly, involving word units dealing with "equal, identical, same, similar": auto-; emul-; equ-, equi-; homeo-; homo-; pari-; peer; rhomb-; syn-; tauto-.

【同源单词】chronoisothermal, geoisotherm, isacoustic, isadelphous, isallobar, isallobaric