Definitions for "Uncertain"
Not certain; not having certain knowledge; not assured in mind; distrustful.
The lack of precise knowledge based on the amount and quality of evidence or data available.
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"
Irresolute; inconsonant; variable; untrustworthy; as, an uncertain person; an uncertain breeze.
subject to change; "a changeable climate"; "the weather is uncertain"; "unsettled weather with rain and hail and sunshine coming one right after the other"
a fish stock that might be not overfished, overfished, or subject to overfishing, but for which there is inadequate or inappropriate information to make a reliable assessment of its status.
Questionable; equivocal; indefinite; problematical.
Keywords:  fallible, err, liable, sure, fall
Not sure; liable to fall or err; fallible.
not established or confirmed; "his doom is as yet unsealed"
not consistent or dependable; "an uncertain recollection of events"; "a gun with a rather uncertain trigger"
ambiguous (especially in the negative); "she spoke in no uncertain terms"
not certain to occur; not inevitable; "everything is uncertain about the army"; "the issue is uncertain"
Keywords:  pile, boxes, firm, balancing, three
not firm or secure; "balancing three boxes in an uncertain pile"
To make uncertain.