Definition: not able to be trusted or depended on Level: B2
那个城市的公共交通经常不可靠。
Public transportation in that city is often ___unreliable.
法庭认为证人的证词不可靠。
The witness's testimony was deemed ___unreliable by the court.
他是个不可靠的朋友，因为他经常食言。
He is an ___unreliable friend because he often breaks promises.
