faultless ·adjective
Definition: perfect, or without any mistakes Level: C2
这位钢琴家的演出完美无瑕，令全场观众着迷。
The pianist gave a ___faultless performance, captivating the entire audience.
父母应该承认自己并非完美无缺，并学会向孩子道歉。
Parents should acknowledge that they are not ___faultless and learn to apologize to their children.
在整个复杂的手术过程中，这位外科医生的技术都无懈可击。
The surgeon's technique was ___faultless throughout the complex procedure.