unstable的词源

英文词源

unstable (adj.)

early 13c., "apt to move," from un- (1) "not" + stable (adj.). Similar formation in Middle High German unstabel. Meaning "liable to fall" is recorded from c. 1300; sense of "fickle" is attested from late 13c. An Old English word for this was feallendlic, which might have become *fally.

中文词源

unstable：不稳定的，不固定的 

词根词缀： un-否定 + -st-站立,放置 + -able形容词词尾

该词的英语词源请访问找单词词源英文版：unstable 词源，unstable 含义。