This is the 2080th most frequent German word.
unerwünschte
Unwanted.
The word 'unerwünschte' is used here as an adjective describing the noun 'E-Mail', implying that the email was not desired or solicited.
Ich erhielt eine unerwünschte E-Mail.
I received an unwanted email.
Here, 'unerwünschte' modifies 'Aufmerksamkeit' and indicates that the attention was not welcomed or appreciated by the subject.
Die unerwünschte Aufmerksamkeit machte ihn nervös.
The unwanted attention made him nervous.
In this example, 'unerwünschten Eindringlinge' denotes intruders that are not desirable or welcome, with 'unerwünschten' agreeing in case and number with the noun 'Eindringlinge'.