significancy

noun

1. (countable, dated, uncountable)Significance.

   “[…] I have added to both of them [language and poetry] in the choice of Words, and Harmony of Numbers which were wanting, […] One is for raking in [Geoffrey] Chaucer (our Engliſh Ennius) for antiquated Words, which are never to be reviv'd, but when Sound or Significancy is wanting in the preſent Language.”

   “The object of rhetoric is persuasion,—of logic, conviction,—of grammar, significancy.”

   “With this brain I must work, in order to give significancy and value to the few facts which I possess.”