偶然性
ǒu​rán​xìng

chance

Senses

偶然性 ǒu​rán​xìng chance

the quality of being accidental or unpredictable; fortuity; serendipity; contingency; often contrasted with 必然性 bì​rán​xìng

偶然性 ǒu​rán​xìng occasional

happening or done sometimes but not often; infrequent

References

antonym 偶然性/偶然性 → 必然性/必然性
antonym 必然性/必然性 → 偶然性/偶然性