trip: [14] The original meaning of trip was ‘move lightly or nimbly’. ‘Stumble’ is a secondary development, and the use of the derived noun for ‘short journey’ did not emerge until the late 17th century (it was apparently originally a nautical usage). The word was borrowed from Old French tripper, which in turn was acquired from Middle Dutch trippen ‘hop, skip’. [trip etymology, trip origin, 英语词源]