This is the 15467th most frequent German word.
vertraute
"Vertraute" means "trusted person" or "confidant" in English.
In this sentence, 'vertraute' is the past tense form of the verb 'vertrauen', meaning 'to trust'. This conveys the action of sharing secrets out of trust.
Sie vertraute ihm ihre größten Geheimnisse an.
She entrusted him with her greatest secrets.
Here, 'vertraute' is an adjective meaning 'familiar'. It describes the 'feeling' with a sense of something well-known or comforting.
Das vertraute Gefühl der Kindheit überkam sie.
The familiar feeling of childhood overcame her.
In this context, 'Vertraute' is used as a noun ('die Vertraute'), signifying a confidant or a person who is trusted.