fall: [OE] The verb fall comes from prehistoric Germanic *fallan, which also produced German fallen, Dutch vallen, and Swedish falla. The noun is partly a survival of Old English feall, partly a borrowing from the related Old Norse fall, but probably mostly a new formation based on the verb. The sense ‘autumn’, now restricted to American English, originated in the 16th century from an earlier phrase fall of the leaf. (Fell ‘cut down’ is related: etymologically it means ‘cause to fall’.) => fell[fall etymology, fall origin, 英语词源]