uncertain

不确定的

易变的

uncertain

无常的, 不确定的, 不可预测的, 靠不住的

uncertain

1. lacking or indicating lack of confidence or assurance; "uncertain of his convictions"; "unsure of himself and his future"; "moving with uncertain (or unsure) steps"; "an uncertain smile"; "touched the ornaments with uncertain fingers"

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(attribute)

2. not established beyond doubt; still undecided or unknown; "an uncertain future"; "a manuscript of uncertain origin"; "plans are still uncertain"; "changes of great if uncertain consquences"; "without further evidence his story must remain uncertain"

(antonym)

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3. not established or confirmed; "his doom is as yet unsealed"

(synonym)

4. not firm or secure; "balancing three boxes in an uncertain pile"

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5. not certain to occur; not inevitable; "everything is uncertain about the army"; "the issue is uncertain"

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(see-also)

6. subject to change; "a changeable climate"; "the weather is uncertain"; "unsettled weather with rain and hail and sunshine coming one right after the other"

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7. not safe from danger or mishap; "faced an uncertain future"; "an unsure existence"

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(similar) ,

8. not consistent or dependable; "an uncertain recollection of events"; "a gun with a rather uncertain trigger"

(similar) ,

9. ambiguous (especially in the negative); "she spoke in no uncertain terms"

(similar)