1. a distressing emotion aroused by impending danger, evil, pain, etc., whether the threat is real or imagined; the feeling or condition of being afraid.
2. a specific instance of or propensity for such a feeling: an abnormal fear of heights.
3. concern or anxiety; solicitude: a fear for someone's safety.
4. reverential awe, esp. toward god.
5. that which causes a feeling of being afraid; that of which a person is afraid: Cancer is a common fear.