expansive (adj.)youdaoicibaDictYouDict[expansive 词源字典]
1650s, "tending to expand," from Latin expans-, past participle stem of expandere "to spread out" (see expand) + -ive. Meaning "embracing a large number of particulars, comprehensive" is by 1813. Related: Expansively; expansiveness.[expansive etymology, expansive origin, 英语词源]