ultimate (adj.)youdaoicibaDictYouDict[ultimate 词源字典]
1650s, from Late Latin ultimatus, past participle of ultimare "to be final, come to an end," from Latin ultimus (fem. ultima) "last, final, farthest, most distant, extreme," superlative of *ulter "beyond" (see ultra-). As a noun from 1680s. Ultimate Frisbee is attested by 1972.[ultimate etymology, ultimate origin, 英语词源]