seven-year itch: Meaning and Definition of

sev'en-year itch'

Pronunciation: (sev'en-yēr"), [key]
  1. scabies.
  2. the temptation to have an affair, held to become a hazard in the seventh year of marriage.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.