sideline
noun
[ ˈsʌɪdlʌɪn ]
• an activity done in addition to one's main job, especially to earn extra income.
• "a sideline career as a stand-up comic"
• either of the two lines bounding the longer sides of a football field, basketball court, tennis court, or similar playing area.
• "Gascoigne celebrated his goal by sprinting to the sidelines"
• a position where one is observing a situation rather than being directly involved in it.
• "the US has chosen to remain on the sidelines"
Similar:
without taking part,
without getting involved,
sideline
verb
• cause (a player) to be unable to play in a team or game.
• "an ankle injury has sidelined him for two weeks"
• remove from the centre of activity or attention; place in a less influential position.
• "backbench MPs have been sidelined and excluded from decision-making"