Lightened everything, yes, for many (7)
I believe the answer is:
allayed
'lightened' is the definition.
The definition and answer can be both to do with human feelings as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?
'everything yes for many' is the wordplay.
'everything' becomes 'all' (I've seen this before).
'yes' becomes 'aye' (I've seen this before).
'for' says to put letters next to each other.
'many' becomes 'd'.
'all'+'aye'+'d'='ALLAYED'
Can you help me to learn more?
(Other definitions for allayed that I've seen before include "Eased" , "Reduced in intensity" , "'Diminished or put at rest, fear perhaps (7)'" , "Put at rest, say suspicions" , "Assuaged, relieved" .)