desanimar - to depress, to discourage

desanudar - to untie, to undo, to unknot

desaparecer - to disappear

desapreciar - to underestimate

desaprender - to unlearn

desarticular - to disarticulate

desbaratar - to ruin, to wreck

descalificar - to disqualify

descansar - to rest

descargar - to discharge, to unload, to download