[ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]不可靠的;不能信赖的 If you describe a person, machine, or method as unreliable, you mean that you cannot trust them.
Diplomats can be a notoriously unreliable and misleading source of information...
外交官可能会提供一些靠不住的误导性信息,这是众所周知的。
His judgement was unreliable...
他的判断不可靠。
He had an unreliable car.
他有辆性能不稳定的车。
unreliability
...his lateness and unreliability.
他总是迟到,还不靠谱
Oxford
un·re·li·ableAWL/ˌʌnrɪˈlaɪəbl; NAmEˌʌnrɪˈlaɪəbl/adjectivethat cannot be trusted or depended on 不可靠的;不能信赖的◆The trains are notoriously unreliable.火车不准点是出了名的。◆He's totally unreliable as a source of information.他提供的消息完全不可信。OPP
reliable
▶un·re·li·abil·ity/ˌʌnrɪˌlaɪəˈbɪləti; NAmEˌʌnrɪˌlaɪəˈbɪləti/noun[uncountable ]◆the unreliability of some statistics某些统计资料的不可靠性un·re·li·able/ˌʌnrɪˈlaɪəbl; NAmEˌʌnrɪˈlaɪəbl/un·re·li·abil·ity/ˌʌnrɪˌlaɪəˈbɪləti; NAmEˌʌnrɪˌlaɪəˈbɪləti/