"desend" . . is that like 'un-sending' something.

If you mean 'go down' . .the spelling is descend . . as in making a 'descent'

de·scend v
1. vti to go down a staircase, hill, valley, or other downward incline
2. vi to come nearer the ground, especially in an aircraft in preparation for landing
3. vi to slope downwards
4. vti to be connected by blood to an ancestor
5. vi to be inherited from or passed down by parents or ancestors
6. vi to behave in a way that is disappointing and below somebody’s normal standards
7. vi to arrive at a place suddenly, especially in large numbers
8. vi to become more evident or established, suddenly or by degrees

Encarta® World English Dictionary © 1999 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.