Blamed keys and wept (7)
I believe the answer is:
decried
'blamed' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Maybe they are linked in a way I don't understand?
'keys and wept' is the wordplay.
'keys' becomes 'de' (I've seen this in other clues).
'and' means one lot of letters go next to another.
'wept' becomes 'cried' ('cry' can be a synonym of 'weep').
'de'+'cried'='DECRIED'
Can you help me to learn more?
(Another definition for decried that I've seen is " Publicly denounced".)