| 单词 | uncertain |
| 释义 | uncertain —uncertainly, adv. —uncertainness, n. /un serr"tn/, adj. 1. not definitely ascertainable or fixed, as in time of occurrence, number, dimensions, or quality. 2. not confident, assured, or free from hesitancy: an uncertain smile. 3. not clearly or precisely determined; indefinite; unknown: a manuscript of uncertain origin. 4. vague; indistinct; not perfectly apprehended: an abstruse novel with uncertain themes. 5. subject to change; variable; capricious; unstable: a person of uncertain opinions. 6. ambiguous; unreliable; undependable: Her loyalties are uncertain. 7. dependent on chance or unpredictable factors; doubtful; of unforeseeable outcome or effect. 8. unsteady or flickering, as light; of changing intensity or quality. [1250-1300; ME; see UN-1, CERTAIN] Syn. 1. unsure, unpredictable. UNCERTAIN, INSECURE, PRECARIOUS imply a lack of predictability. That which is UNCERTAIN is doubtful or problematical; it often involves danger through an inability to predict or to place confidence in the unknown: The time of his arrival is uncertain. That which is INSECURE is not firm, stable, reliable, or safe, and hence is likely to give way, fail, or be overcome: an insecure foundation, footing, protection. PRECARIOUS suggests great susceptibility to failure, or exposure to imminent danger: a precarious means of existence. 3. unsettled, undetermined. 8. irregular. |
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