Synonyms for Spare-time activity:

• n.

  •avocation (noun)
  • avocation.
  •by-line (noun)
  • by-line.
  •hobby (noun)
  • hobby.
  •Other relevant words: (noun)
  • pastime,
  • pursuit,
  • interest.
  •sideline (noun)
  • sideline.

• Other synonyms:

  •Other relevant words:
  • rocking horse,
  • out of bounds.
  •Other relevant words (noun):
  • hobbyhorse.