Noun, Na-adjective, No-adjective
1. coincidence; chance; accident; fortuityAntonym: 必然
2. by chance; unexpectedly
3. contingency (philosophy)
Wikipedia definition
4. Contingency (philosophy)"Contingency" and "contingent" redirect here. For other uses, see Contingency (disambiguation). In philosophy and logic, contingency is the status of propositions that are neither true under every possible valuation nor false under every possible valuation. A contingent proposition is neither necessarily true nor necessarily false.
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