Afraid, p. a.
Etymology: [OE. afrayed, affraide, p. p. of afraien to affray. See Affray, and cf. Afeard.]
Impressed with fear or apprehension; in fear; apprehensive. [Afraid comes after the noun it limits.] "Back they recoiled, afraid." Milton.
Note: This word expresses a less degree of fear than terrified or frightened. It is followed by of before the object of fear, or by the infinitive, or by a dependent clause; as, to be afraid of death. "I am afraid to die." "I am afraid he will chastise me." "Be not afraid that I your hand should take." Shak. I am afraid is sometimes used colloquially to soften a statement; as, I am afraid I can not help you in this matter.
Syn. -- Fearful; timid; timorous; alarmed; anxious.
Shades of meaning
Fernald lists afraid only as an antonym, under brave.
He lists it without comment; the entries above explain its neighbors.