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：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