Insidious book Synonyms

Definitions for Insidious


IB abbreviation

IB is an abbreviation for Insidious Book
What does IB stand for?
IB stands for "Insidious Book"

Definitions for Book


  • (noun) a set of printed sheets of paper bound together between covers and forming a work of fiction or nonfiction
  • (noun) a publication that appears at regular intervals
  • (noun) information not generally available to the public