a·fraid / əˈfrād/ • adj. feeling fear or anxiety; frightened: I'm afraid of dogs. ∎  worried that something undesirable will occur or be done; she was afraid of antagonizing him. ∎  unwilling or reluctant to do something for fear of the consequences: I'm afraid to go out on the streets. ∎  (afraid for) anxious about the well-being or safety of someone or something: William was suddenly afraid for her.PHRASES: I'm afraid used to express polite or formal apology or regret: I'm afraid I don't understand.

afraid XIV. ME. af(f)raied, pp. of AFFRAY used as adj. after AN. afrayé; superseded AFEARD.