Judged group of words, on the day (9)
I believe the answer is:
sentenced
'judged' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Perhaps there's an association between them I don't understand?
'group of words on the day' is the wordplay.
'group of words' becomes 'sentence' (I've seen this before).
'on' means one lot of letters go next to another (in a down clue, letters appear on others).
'the day' becomes 'd' (abbreviation for day).
'sentence'+'d'='SENTENCED'
Can you help me to learn more?
(Another definition for sentenced that I've seen is " Condemned".)