1
[ adjective ] lacking or indicating lack of confidence or assurance

Synonyms

incertain unsure

Examples

"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"

Used in print

(William G. Pollard, Physicist and Christian....)

Even Mr._Miller himself seems uncertain on this score .

(Nathan Rapport, ""I've Been Here before!"...)

Dr._Hilprecht was uncertain as to the language used by the ancient priest in his dream .

2
[ adjective ] not established beyond doubt; still undecided or unknown

Examples

"an uncertain future" "a manuscript of uncertain origin" "plans are still uncertain" "changes of great if uncertain consequences" "without further evidence his story must remain uncertain"

Used in print

(The Christian Science Monitor,...)

For_example , there was sheet_music with the word `` jazz '' in the title , to illustrate how a word of uncertain origin took_hold .

(Frank Oppenheimer, "Science and Fear-- A Discussion...)

And yet we obviously also believe that the avoidance of the disaster depends in some obscure or at_least uncertain way on the details of how we behave .

(J. F. Vedder, "Micrometeorites", in Francis S. J...)

The calibration of piezoelectric sensors in_terms_of the particle parameters is very uncertain .

3
[ adjective ] not firm or secure

Examples

"balancing three boxes in an uncertain pile"

Related terms

insecure

4
[ adjective ] subject to change

Examples

"a changeable climate" "the weather is uncertain" "unsettled weather with rain and hail and sunshine coming one right after the other"

Related terms

variable

5
[ adjective ] not consistent or dependable

Examples

"an uncertain recollection of events" "a gun with a rather uncertain trigger"

Related terms

unreliable

6
[ adjective ] not certain to occur; not inevitable

Examples

"everything is uncertain about the army" "the issue is uncertain"

7
[ adjective ] not safe from danger or mishap

Synonyms

unsure

Examples

"faced an uncertain future" "an unsure existence"

Related terms

insecure

8
[ adjective ] not established or confirmed

Synonyms

unsealed

Examples

"his doom is as yet unsealed"

Related terms

sealed

9
[ adjective ] especially in the negative "no uncertain," as in "spoke in no uncertain terms"

Related terms

ambiguous

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