backstreets

/B AE1 K S T R IY1 T S/
noun
  1. 1

    A usually small and narrow street or alley, especially one in inferior or poorer parts of a city, away from the centre.

  2. 2

    A secret, clandestine or illegal scene.

Antonyms

Source: https://en.wiktionary.org/wiki/back%20street, https://en.wiktionary.org/wiki/backstreet, https://en.wiktionary.org/wiki/backstreets