We don't have synonyms for faints yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are faint, fainty and saints.
(n) :
Alternative form of feints (“product of distillation”) [(alcohol production) The strong spirit produced at the beginning of distillation (strong feints, also foreshot), and the weak spirit produced at the end (weak feints, also tailings or tail).]
(n) :
Alternative form of feints (“product of distillation”) [(alcohol production) The strong spirit produced at the beginning of distillation (strong feints, also foreshot), and the weak spirit produced at the end (weak feints, also tailings or tail).]