logomancy

From logo- +‎ -mancy.

logomancy (countable and uncountable, plural logomancies)

1. Divination with words.
   • 1955, Vladimir Nabokov, chapter 23, in Lolita, 1st American edition, New York, N.Y.: G[eorge] P[almer] Putnam’s Sons, published August 1958, →OCLC, part 2, pages 251–252:

     He mimed and mocked me. His allusions were definitely highbrow. He was well-read. He knew French. He was versed in logodaedaly and logomancy.