troubling

/ˈtrʌblɪŋ/
adjective
  1. Causing worry, anxiety, or distress.
    • The report contained troubling statistics about pollution.
    • She noticed a troubling change in her friend's behavior.
    • The news about the storm was deeply troubling.
verb
  1. Present participle of trouble: to cause someone to worry, be anxious, or be distressed.
    • The constant noise is troubling the residents.
    • The thought of the exam is troubling her sleep.
    • His silence is troubling me more than his words would.