(of a statement or story) unlikely to be authentic, even though it is widely believed to be true

偽の (ぎの), 伝説的な (でんせつてきな)
a feeling of uncertainty and doubt about something
open to question and disagreement

論争の余地がある, 異論のある
used to express one's uncertainty about the statement one has made as there might be something that makes it untrue
to certainly happen at some point in the future
a state of being confused and not having a clear understanding of an action, behavior, etc.

混乱 (こんらん), 迷惑 (めいわく)
subject to argument or disagreement

議論の余地がある, 論争の余地がある
a feeling of disbelief or uncertainty about something

疑念 (ぎねん), 不信 (ふしん)
to not believe or trust in something's truth or accuracy

疑う (うたがう), 疑念を持つ (ぎねんをもつ)
improbable or unlikely to happen or be the case

疑わしい, 不確かな
(of a person) unsure or hesitant about the credibility or goodness of something

疑わしい(ぎわかしい), 不確かな(ふたしかな)
acting or talking with hesitation due to uncertainty or lack of confidence

ためらいがちな, ぎこちない
(of speech or movement) in a nervous manner that makes one stutter while speaking or stumble while walking

たどたどしく, ためらいがちな
to say that one will do something even though they might not really intending to
to pause before saying or doing something because of uncertainty or nervousness

ためらう, 躊躇う
the act of pausing before doing or saying something because one feels unsure

ためらい, 躊躇(ちゅうちょ)
having a feeling of uncertainty or doubt toward something

不確かな, あいまいな
not able to occur, exist, or be done

不可能な, 実現不可能な
used to show uncertainty or hesitation

もしかしたら, たぶん
used usually in a response to show that something may not be true
used to show one's uncertainty of something
