1580s, a late construction from a- (1) + fright (v.), probably on model of earlier past participle adjective affright "struck with sudden fear" (metathesized from Old English afyrht). Related: Affrighted; affrighting.
1. Ghosts could never affright her.
2. Does the Rising Sun affright.
3. Many of nature's greatest oddities , that would affright dwellers up here, are accepted down there ( David Mazel )