questionable

adj

Problematic; open to doubt or challenge. / Of dubious respectability or morality. / (obsolete) Inviting questions; inviting inquiry.

His behavior at the party was questionable.

意味（1）

Problematic; open to doubt or challenge.

It is questionable if the universe is open or closed.

意味（2）

Of dubious respectability or morality.

Tiffiny’s behavior is highly questionable.

意味（3）

(obsolete) Inviting questions; inviting inquiry.

Thou com’st in such a questionable shape

That I will speak to thee.