We don't have synonyms for well-devised yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are well-defined, well-advised and self-devised.
(adj) :
Accurately and precisely described or specified.
(adj) :
(mathematics) Defined in an unambiguous and consistent way: specifically, such that any two objects implied to be identical are indeed identical.
(adj) :
Accurately and precisely described or specified.
(adj) :
(mathematics) Defined in an unambiguous and consistent way: specifically, such that any two objects implied to be identical are indeed identical.