possibleyoudaoicibaDictYouDict
possible: [14] Latin posse ‘be able’ (source of English posse) produced the derived adjective possibilis ‘that can be done’, which came into English via Old French possible. (Its antonym impossible reached English at roughly the same time.)
=> posse, potent
possible (adj.)youdaoicibaDictYouDict
mid-14c., from Old French possible and directly from Latin possibilis "that can be done," from posse "be able" (see potent).
possible (n.)youdaoicibaDictYouDict
1640s, from possible (adj.).