绝缘 juéyuán to have no contact with
to have no contact with; to be cut off from; (electricity) to insulate
How to remember 绝缘: 绝 cut + 缘 reason = to have no contact with.
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How it is used
- Technical 'to insulate' against electricity - 绝缘材料 (juéyuán cáiliào) insulating material.
- Figuratively 'to have zero contact with': 和好运绝缘 (hé hǎoyùn juéyuán) to be a total stranger to good luck.
- The figurative sense (often self-deprecating or humorous) is common in casual speech.