If you describe something as unnerving, you mean that it makes you feel worried or uncomfortable.
例句
It is very unnerving to find out that someone you see every day is carrying a potentially deadly virus.发现朝夕相处的人竟携带着一种可能致命的病毒是一件令人很不安的事情。...her unnerving habit of continuously touching people she was speaking to.她与人说话时老是碰触对方的恼人习惯
英英词典释义
Adjective
1. inspiring fear;
"the formidable prospect of major surgery""a tougher and more redoubtable adversary than the heel-clicking, jackbooted fanatic"- G.H.Johnston"something unnerving and prisonlike about high gray wall"