词根：-prob-, -prov-, -proof-

【词根含义】：验证,试验;证实,批准

【词根来源】：来源于拉丁语动词probo, probare, probavi, probatus(证实,批准),经古法语后字母b逐步转化为v和f。

【同源单词】：improbable, probability, probable, probably, approval

词根词缀：-able

【来源及含义】Latin: a suffix; expressing capacity, fitness to do that which can be handled or managed, suitable skills to accomplish something; capable of being done, something which can be finished, etc.

【相关描述】A suffix that forms adjectives. The suffix -ible has related meanings; expressing ability, capacity, fitness; capable of, fit for, able to be done, can be done, inclined to, tending to, given to.

This list is only a small sample of the thousands of -able words that exist in English.

【同源单词】abdicable, -able, abolishable, abominable, abradable, acceptable

词根词缀：pro-, por-, pur-

【来源及含义】Greek > Latin: a prefix signifying before; forward, forth; for, in favor of; in front of; in place of, on behalf of; according to; as, to place before; to go before or forward, to throw forward

【相关词根词缀】 Related before-word units: ante-; antero-; anti-; pre-.

【同源单词】portend, portent, portentous, portentously, portentousness, pro

词根词缀：prob-, proba-, probat-, prov-

【来源及含义】Latin: upright, good, honest; to try, to test, to examine; to demonstrate

【同源单词】Aliudque cupido, approbate, approbation, approbative, approbativeness, approvable