fault n.
根据语境猜词义(1) Don't scold yourself too much, you know, nobody lives without any fault. (2) It's my fault to have you waiting for so long a time. (3) Her only fault is stubbornness. (4) There is a fault in the electrical system.
过失，缺陷，故障，错误 　
缺陷
错误
过失
故障
fault:        A. 有一定后果，这是一种过失（有责任旳，需要犯错人负责旳）B. （地理）断层  It’s your fault.        打烂窗户→fault
Translate these sentence1. My memory was at fault.2. He always finds fault with others and does worse himself.3. It’s my fault not to inform them in time.
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