The authoritative instrument for the distribution of all forms of official IRS tax guidance is the Internal Revenue Bulletin (IRB), a weekly collection of these and other items of general interest to the tax professional community.
perfidy definition: The definition of a perfidy is a deliberate betrayal. (noun) An example of a perfidy is spreading a best friend's secrets all over town....
Noun. 1. perjury-criminal offense of making false statements under oath. bearing false witness, lying under oath. infraction, misdemeanor, misdemeanour, violation, infringement-a crime less serious than a felony.