Lead climb from top to bottom without falling and without previous knowledge of the route.

To lead a climb without falling or hanging on the rope on one's first attempt without any prior information about the route. The French term for this is a vue, but you should avoid using it lest you humiliate yourself publicly. (For clarification, read entry for aiders.)

to climb a route without prior knowledge or experience of the moves, and without falling or otherwise weighting the rope

clean ascent, with no prior practise or beta .

Leading a climb with no falls and no "dogging" (hanging on the rope) on the first attempt without any prior knowledge (beta) of its features or difficulties.