befall (v.)youdaoicibaDictYouDict[befall 词源字典]
Old English befeallan "to deprive of; fall to, be assigned to; befall," from be- "by, about" + feallan (see fall). Compare Old Frisian bifalla, Old Saxon, Old High German bifallan, German befallen. Related: Befell; befalling.[befall etymology, befall origin, 英语词源]
misbefall (v.)youdaoicibaDictYouDict
"suffer harm, come to grief," mid-13c., from mis- (1) + befall. Related: Misbefell; misbefalling.