This is the 8303rd most frequent Dutch word.
gesmede
Forged.
Here, "gesmede" is used as the past participle of the verb "smeden," meaning "to forge," describing the action of forging.
De smid heeft een scherp mes gesmede.
The blacksmith has forged a sharp knife.
In this context, "gesmede" acts as an adjective, metaphorically qualifying the word "samenwerking" (collaboration).
Het idee was een goed gesmede samenwerking.
The idea was a well-forged collaboration.
Here, "gesmede" is used descriptively to modify "plannen" (plans), implying that the plans were carefully and skillfully crafted.