Respite
'respite' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for let-up that I've seen before include "Decline" , "Abatement" , "Pause in intensity" , "Pause, temporary respite" , "Relieving pause" .)
'respite' is the definition.
(I know that respite can be written as relief)
This is the entire clue.
(Other definitions for relief that I've seen before include "Rest - cure" , "Relaxation following distress" , "That's a load off my mind" , "welfare" , "help for needy countries" .)
'respite' is the definition.
(I know that respite can be written as reprieve)
This is the entire clue.
(Other definitions for reprieve that I've seen before include "Temporary relief, like stay on death sentence" , "Grant stay of execution" , "Give stay of execution to" , "left off the hook" , "Respite - stay of execution" .)
'respite' is the definition.
(I know that breather is a type of respite)
This is the entire clue.
(Other definitions for breather that I've seen before include "lung, possibly?" , "Recovery time" , "One who inspires" , "lung or > liver?" , "Brief pause for rest" .)
'respite' is the definition.
(lull is a kind of respite)
This is the entire clue.
(Other definitions for lull that I've seen before include "Soothe, calm" , "A calm period as in a storm" , "Rock to sleep" , "Peaceful interlude" , "Soothe or send to sleep" .)
'respite' is the definition.
(I know that respite can be written as rest)
This is the entire clue.
(Other definitions for rest that I've seen before include "Take one's ease" , "lean" , "Relaxation" , "Tranquillity" , "Balance" .)