unreliable
🇺🇸
/ˌʌnrɪˈlaɪəbl/
🇬🇧
/ˌʌnrɪˈlaɪəbl/
adjective
R
not able to be trusted or depended on
The weather forecast is often unreliable, so it's best to be prepared for rain even if it says sunny.
天氣預報常常不可靠，所以即使預報是晴天，最好也做好下雨的準備。
translation
不可靠的