doubt
beep (electronically-produced tone)
to scan
to tap a card
think
doubt
Anxiety, distress.
A very small amount, distance, etc.; a whit or jot.
A way of thinking (associated with a group, nation or region).
The operation by which mental activity arise or are manipulated; the process of thinking; the agency by which thinking is accomplished.
Representation created in the mind without the use of one's faculties of vision, sound, smell, touch, or taste; an instance of thinking.
The careful consideration of multiple factors; deliberation.