Cast into doubt, thrown into doubt/ doubtfull/ in doubt/ questionable

It is not certain. Doubts have arisen concerning it (סָפֵק means doubt, uncertainty, lack of certainty).

("Even though it is a matter of great sorrow that I have interpreted a tax that was imposed in doubt and everyone claims to be my servant" - Shita Mekbetsat Masekhet Baba Mitsia 10 a.a., and so: "And the foundation of the years is the ten days of the Messiah...and whoever casts doubt on Him or disdains His word...is a disbeliever in Him and in the words of His prophets" - Harambam/Explanation of the Mishnah, The introduction to the chapter "Chalk", 8, 317, and so: "It is still doubtful whether the matter was worthy of his consideration, that when the time came, the best nature was revealed" - Agnon/ City and Fullness, 390, and so: "The righteous man knows that even the solution to the heads of the boxes... is doubtful, and if not, it is nothing but the fruit of his restless spirit" - H. Be'er/ El A place where the wind blows, 64)

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