This is the 13369th most frequent German word.
befreundeter
"Associated" or "friendly" (adjective, indicating a friendly or allied relationship).
In this sentence, 'befreundeter Arzt' refers to a doctor with whom the speaker has a friendly relationship. The word 'befreundeter' functions as an adjective describing the noun 'Arzt'.
Ein befreundeter Arzt hat mir bei meinem Gesundheitsproblem geholfen.
A friendly doctor helped me with my health problem.
Here, 'befreundetes Ehepaar' is used to signify a couple the speaker is acquainted with in a friendly manner. 'Befreundeter' works as an adjective that modifies the noun 'Ehepaar'.
Wir trafen uns in einem Restaurant mit einem befreundeten Ehepaar.
We met in a restaurant with a friendly couple.
In this example, 'befreundeter Lehrer' indicates a teacher the speaker knows personally and who provided assistance. Again, 'befreundeter' acts as an adjective linked to the noun 'Lehrer'.