The Open Dictionary

detrimental

adjective

UK/ˌdet.rɪˈmen.tᵊl/
US/ˌdet.rəˈmen.t̬ᵊl/

Definitions of detrimental adjective

  1. C2

    causing damage or harm; having a negative effect

    • Lack of sleep can be detrimental to a student's academic performance.

    • Prolonged exposure to high levels of noise is detrimental to hearing.

    • Unhealthy eating habits can be detrimental to one's physical health.