Apprehension

In the first instance, to take hold of or to seize, in a quite literal sense. Then, to understand: for the mind to grasp. Next, once knowledge is attained, anticipation of future consequences, which the mind grasps eagerly from its deductions. And finally, it seems, fear of those consequences, dread of what has yet to happen, but is sure---so suspects the mind, somewhere deep inside---to happen.