Disbelief or uncertainty (about something); (countable) a particular instance of such disbelief or uncertainty.
To be undecided about; to lack confidence in; to disbelieve, to question.
The act of challenging, wondering, and doubting.
Interrogation.
The action of asking questions; a survey; an inquiry.
Unsure of one's sexual orientation and/or gender identity.
Characterized by questions, inquisitiveness, doubt, or wonder.