词根：-apt-

【词根含义】：适合,适应

【词根来源】：来源于拉丁语动词apo, apere, -, aptus(系紧,栓牢)的过去分词词干-apt-(系紧的,合适的)。

【同源单词】：adapt, adaptable, adaptation, adaptive, adept

词根词缀：apt-, ept-

【来源及含义】Latin: fit, fitted, suited, suitable, appropriate; join, fasten

【同源单词】adapt, adapt, adaptability, adaptable, adaptableness, adaptably

词根词缀：-tude

【来源及含义】Latin: a suffix; state, quality, condition of

【同源单词】acritude, altitude, altitude, amplitude, amplitude modulation, aptitude