WordNet

vague or not clearly defined or stated; "must you be so indefinite?"; "amorphous blots of color having vague and indefinite edges"; "he would not answer so indefinite a proposal"
not decided or not known; "were indefinite about their plans"; "plans are indefinite"
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 consequences"; "without further evidence his story must remain uncertain"
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" (同)unsure, incertain
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"
not consistent or dependable; "an uncertain recollection of events"; "a gun with a rather uncertain trigger"
liable to or capable of change; "rainfall in the tropics is notoriously variable"; "variable winds"; "variable expenses"
a quantity that can assume any of a set of values (同)variable quantity
a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity
something that is likely to vary; something that is subject to variation; "the weather is one variable to be considered"
(used of a device) designed so that a property (as e.g. light) can be varied; "a variable capacitor"; "variable filters in front of the mercury xenon lights"
not capable of being made consistent or harmonious; "inconsistent accounts"
displaying a lack of consistency; "inconsistent statements cannot both be true at the same time"; "inconsistent with the roadmap"
not conclusive; not putting an end to doubt or question; "an inconclusive reply"; "inconclusive evidence"; "the inconclusive committee vote"
showing lack of certainty; "he paused uncertainly"
to an indefinite extent; for an indefinite time; "this could go on indefinitely"
the quality of being vague and poorly defined (同)indeterminateness, indefinity, indetermination, indeterminacy
an indefinite quantity that is below average size or magnitude (同)small indefinite amount
a determiner (as `a or `some in English) that indicates nonspecific reference

PrepTutorEJDIC

『不明確な』,不確定の,はっきりしない / (数・量・大きさなどが)不定の,限られていない
《補語にのみ用いて》(人が)『確信が持てない』,はっきり分からない / (結果などが)『確かでない』,はっきりしない,疑わしい / 『変わりやすい』,不安定な / 明確でない,ぼんやりした
『変わりやすい』,一定しない,気まぐれの / 変えられる,可変の,調節できる / 《英》《遠回しに》(演技などが)むらがある / 変化するもの,変化しやすいもの / (数学で)変数
食い違っている,矛盾する
結論に到達しない,決定的でない
確信なく;疑わしく;変わりやすく;ぼんやりと
『漠然と』,あいまいに
不確定,不定