at the back of your mind
US /æt ðə bæk əv jʊər maɪnd/
UK /æt ðə bæk əv jʊər maɪnd/

1.
im Hinterkopf, unbewusst
a thought or worry that you have but that you are not thinking about consciously
:
•
The thought of the upcoming exam was always at the back of her mind.
Der Gedanke an die bevorstehende Prüfung war immer im Hinterkopf.
•
He had a nagging feeling at the back of his mind that he had forgotten something important.
Er hatte ein nagendes Gefühl im Hinterkopf, dass er etwas Wichtiges vergessen hatte.