descending (adj.)

• ascending
• axial
• back
• backward
• deciduous
• declivitous
• descendant
• down
• downhill
• downward
• drifting
• drooping
• dropping
• falling
• flowing
• fluent
• flying
• going
• passing
• progressive
• regressive
• retrogressive
• rising
• rotary
• rotational
• rotatory
• running
• rushing
• sagging
• setting
• soaring
• streaming
• tottering
• upward