The opposite of descent is ascent. While descent refers to a downward movement or an action of coming down, ascent denotes the act of climbing or moving upward. Another antonym for descent is rise, which also implies an upward movement or an increase in elevation. Similarly, the opposite of decline is improvement or growth, which suggest an increase or a positive change in condition. Conversely, drop or fall is another antonym that denotes a downward movement or a decrease in height or status. Moreover, elevation, advance, and promotion are other antonyms for descent that imply a higher level or a better position than before.