Descend (5,4)
'descend' is the definition.
(climbing down is a kind of descending)
This is all the clue.
(Other definitions for climb down that I've seen before include "Potholers have to" , "A retreat from previous position - descend carefully" , "Become more humble" , "U-turn" , "Retreat from a previously held position" .)
'descend' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for lower that I've seen before include "of lesser status" , "Jersey perhaps" , "put down" , "Reduce" , "Let down, being inferior" .)
'descend' is the definition.
(I know that drop is a more specific form of descend)
This is all the clue.
(Other definitions for drop that I've seen before include "See 1" , "down, say, casually" , "Collapse, globule" , "Fall (in value)" , "Sink; sweet; set down" .)
'descend' is the definition.
(I know that descend can be written as fall)
This is all the clue.
(Other definitions for fall that I've seen before include "Autumn - collapse" , "What tripper risks" , "A season in the US" , "What Americans call autumn" , "three months in America" .)
'descend' is the definition.
(alighting is a kind of descending)
This is the entire clue.
(Other definitions for alight that I've seen before include "suffering from arson attack?" , "Get out of train" , "Small restaurant" , "Settle; on fire" , "'Step off, a bus, say (6)'" .)