This is the 4668th most frequent German word.
vereinbarte
"Agreed" or "arranged."
Here, 'vereinbarte' is used as an adjective derived from the past participle of 'vereinbaren' and modifies 'Zeit' (time).
Die vereinbarte Zeit für das Treffen ist 15 Uhr.
The agreed-upon time for the meeting is 3 PM.
In this sentence, 'vereinbarte' is again an adjective modifying 'Lösung' (solution), indicating that it was mutually agreed upon.
Wir sind zu der vereinbarten Lösung gekommen.
We have reached the agreed-upon solution.
Here, 'vereinbarte' describes 'Punkte' (points) as being agreed upon beforehand.