We don't have synonyms for presocratics yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are pre-Socratic, presocratic and pre-socratics.
(n) :
Any Ancient Greek philosopher who preceded or was roughly contemporaneous with Socrates and whose methods and views were influenced neither directly nor indirectly by Socrates or his primary student, Plato.
(adj) :
of, or characteristic of, such a philosopher (or these philosophers) as a whole.
(n) :
Any Ancient Greek philosopher who preceded or was roughly contemporaneous with Socrates and whose methods and views were influenced neither directly nor indirectly by Socrates or his primary student, Plato.
(adj) :
of, or characteristic of, such a philosopher (or these philosophers) as a whole.