We don't have synonyms for filets yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are filet, files and fillets.
(v) :
(American spelling) Alternative spelling of fillet. [(transitive) To slice, bone or make into fillets.]
(n) :
(American spelling) Alternative spelling of fillet. [(now rare) A headband; a ribbon or other band used to tie the hair up, or keep a headdress in place, or for decoration.]
(v) :
(American spelling) Alternative spelling of fillet. [(transitive) To slice, bone or make into fillets.]
(n) :
(American spelling) Alternative spelling of fillet. [(now rare) A headband; a ribbon or other band used to tie the hair up, or keep a headdress in place, or for decoration.]