The scariest thing is usually the thing that you are afraid of the most. When you are asked to name the scariest thing, you might choose something that you are already afraid of, or you might choose something that you haven't experienced yet.
The giver is the person who gives something to another person. The giver is usually the one who is less powerful or who doesn't have something that the other person wants.
Wireless means that something is connected without using wires. When you are wireless, you are not connected to the Internet or to any other devices.
Stemmed means to be cut off at the base. When you stem a plant, you cut off the base of the plant so that it will not grow any further.
When something is wearable, you can wear it. This means that it is not hidden or hidden away.
When something is snugly, it is comfortable and safe. If you are snugly clothed, you are protected from the cold.
To consume (something) is to eat or drink it up. If you consume too much sugar, you're going to end up feeling sick and tired.
The adjective attached means that something is able to be attached to something else. A belt is attached to your waist, for example, and a flag is attached to a pole.