We don't have synonyms for preterits yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are preterit, preterite and pretermits.
(n) :
(uncommon, US) Alternative form of preterite. [(grammar) A grammatical tense or verb form serving to denote events that took place or were completed in the past.]
(adj) :
(uncommon, US) Alternative form of preterite. [(grammar, of a tense) Showing an action at a determined moment in the past.]
(n) :
(uncommon, US) Alternative form of preterite. [(grammar) A grammatical tense or verb form serving to denote events that took place or were completed in the past.]
(adj) :
(uncommon, US) Alternative form of preterite. [(grammar, of a tense) Showing an action at a determined moment in the past.]