bounteous (adj.)youdaoicibaDictYouDict[bounteous 词源字典]
late 14c., from bounty + -ous; originally "full of goodness," but always shading toward "generous in bestowing," a sense which logically might have been left to bountiful. Related: Bounteously; bounteousness.[bounteous etymology, bounteous origin, 英语词源]