Synonyms for Junk mail:

• n.

  •communication (noun)
  • junk mail.
  •letter (noun)
  • memorandum,
  • KITES,
  • postcards,
  • kite,
  • post card,
  • postcard.
  •mail (noun)
  • Postal Services,
  • air mail,
  • postal service.
  •marketing mail (noun)
  • direct mail,
  • spam.

• Other synonyms:

  •
  • advertisement,
  • banner,
  • advert,
  • advertorial,
  • banner ad,
  • classified ad,
  • bumper sticker,
  • circular,
  • billboard,
  • ad-.
  •Other relevant words:
  • express,
  • letter,
  • correspondence,
  • frank,
  • special delivery,
  • post,
  • unsolicited mail,
  • parcel post,
  • mailing list,
  • airmail.

Hyponym for Junk mail:

• n.

  • communication
    third class, third-class mail.