词根：-val-

【词根含义】：强壮;价值

【词根来源】：来源于拉丁语动词valeo, valere, valui, valitus(强壮,价值)。

【同源单词】：avail, available, countervail, devaluate, devaluation

前缀：de-

【词根含义】：去掉,取消;向下,减少;否定,相反;离开,分离;加强意义

【词根来源】：来源于拉丁语前缀de-。

【同源单词】：debate, debris, deburr, decadence, decay

词根词缀：-ation, -ization, -isation

【来源及含义】Greek > Latin: a suffix; action, act, process, state, or condition; or result of doing something

【相关描述】Although there are over 1,450 word entries ending with -ation or -ization listed in this unit, there are certainly many more which exist in the English language. At any rate, this unit provides a significant number of -ation and -ization examples for you to see.

【同源单词】abarticulation, abbreviation, abdication, abdominal examination, aberration, abevacuation

词根词缀：valid-, val-, vale-, -vail, -valent, -valence

【来源及含义】Latin: valere, to be strong, to be well, to be worth; strong; power, strength; and "fare well" [go with strength]

【同源单词】Ab abusu ad usum non valet consequentia, Ab actu ad posse valet illatio, ad valorem, Aeternum vale, ambivalence, ambivalent