Answer:
Without what would everyone lose their head?
What can be measured but has no length, width or height?
You might accuse someone living with a stolen identity of being this.
How do you spell hard water with only three letters?
A precious gift, yet it has no end, no beginning, and nothing in the middle.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?