废弃 fèiqì to discard
to discard; to abandon (old ways); to invalidate
How to remember 废弃: 废 to terminate + 弃 abandon = to discard.
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How it is used
- To discard/abandon as no longer useful - 废弃的工厂 (fèiqì de gōngchǎng) an abandoned factory; 废弃陋习 (fèiqì lòuxí) to abandon bad old habits.
- Applies to physical things left to disuse and to practices/rules cast aside.
- Contrast 废除 (fèichú), which is specifically abolishing laws/systems; 废弃 is broader 'let fall into disuse'.