disadvantaged (adj.)youdaoicibaDictYouDict[disadvantaged 词源字典]
1610s, past participle adjective from disadvantage (v.). Of races or classes deprived of opportunities for advancement, from 1902, a word popularized by sociologists. As a noun, shorthand for disadvantaged persons, it is attested by 1939.[disadvantaged etymology, disadvantaged origin, 英语词源]